CranioSacral Therapy Treatment Glossary

Understanding the Language of Advanced CranioSacral Therapy Treatment

As an Advanced Level CranioSacral Therapist with over 20 years of clinical experience, I use specialized terminology to explain your treatment and help you understand what’s happening in your body. This glossary defines the anatomical structures, concepts, and techniques central to CranioSacral Therapy, with particular focus on how they relate to the conditions I treat in my St. Petersburg practice.

Each entry includes not just a definition, but also clinical context – explaining why these structures matter in treatment and what patterns I commonly observe across different conditions. Understanding these terms can help you better communicate about your symptoms and appreciate the interconnected nature of the craniosacral system.

This glossary is organized to support your understanding of:

Anatomical structures I assess and work with during treatment
CranioSacral Therapy concepts and techniques
How different structures relate to specific conditions
The clinical patterns I observe in my practice

If you have questions about any terms you encounter during your treatment sessions, this resource provides detailed explanations grounded in my clinical experience treating clients throughout St Petersburg, and the Tampa Bay area.

Anatomical Structures

Occipital Bone

What it is:

The occipital bone forms the back and base of the skull, creating the bowl-shaped structure that cradles the brain and protects the brainstem. It contains the foramen magnum (the large opening where the spinal cord enters the skull) and serves as the attachment point for numerous neck muscles and the dural membrane system. In CranioSacral Therapy, the occipital bone is considered a primary structure because of its direct connection to the entire craniosacral system through the dural tube.

Why it matters in CST treatment:

During treatment, I assess the occipital bone’s position, mobility, and tension patterns because restrictions here create a cascade effect throughout the entire body. The occipital bone’s relationship with the atlas (first cervical vertebra) and its role in housing the suboccipital muscles make it central to understanding head, neck, and spine dysfunction. When the occipital bone is restricted, it can compress nerves, limit cranial rhythm, and create chronic tension patterns that affect everything from headaches to lower back pain.

Clinical patterns I commonly see:

In migraine treatment: The occipital bone tends to be a primary focus area because the greater occipital nerve emerges right at the occipital ridge. When suboccipital muscles are tight or the bone itself is compressed or rotated, this nerve becomes irritated, often creating the classic “migraine starting at the base of the skull” pattern. I frequently find occipital restrictions in clients with cervicogenic migraines, especially those triggered by neck tension or poor posture.

In occipital neuralgia treatment: This condition specifically involves irritation of the occipital nerves, which exit right at the base of the skull where the occipital bone meets the upper cervical vertebrae. Compression or misalignment of the occipital bone directly affects these nerves, creating the characteristic sharp, shooting pains at the back of the head. Releasing occipital restrictions is often essential for resolving occipital neuralgia symptoms.

In chronic neck pain: The occipital bone’s attachment to the suboccipital muscles (the deepest layer of neck muscles) means that restrictions here perpetuate chronic neck tension. When the occipital bone is compressed against the atlas vertebra or rotated from poor posture, these muscles remain chronically tight, creating persistent neck pain that doesn’t respond well to massage or stretching alone.

In TMJ treatment: While it might seem unrelated, the occipital bone connects to the temporal bones (which house the jaw joint) through the tentorium cerebelli – a dural membrane structure inside the skull. When the occipital bone is restricted, it creates tension through this membrane system that can pull on the temporal bones and affect jaw alignment and function.

In concussion recovery: Head impacts frequently create compression or rotational patterns in the occipital bone, especially from falls or sports injuries where the back of the head strikes a surface. These patterns can interfere with cerebrospinal fluid flow and create persistent symptoms like headaches, brain fog, and visual disturbances long after the initial injury.

Sphenoid Bone

What it is:

The sphenoid bone sits at the center base of the skull, often described as the “keystone” because it connects to all other cranial bones either directly or through shared sutures. Shaped like a butterfly, it houses the pituitary gland (the master endocrine gland) in a small depression called the sella turcica. The sphenoid articulates with the temporal bones laterally, the occipital bone posteriorly, and the frontal and ethmoid bones anteriorly, making it central to cranial mechanics and overall skull function.

Why it matters in CST treatment:

The sphenoid bone’s central position means that restrictions here affect the entire cranial system. During treatment, I assess the sphenoid’s relationship with surrounding bones through the sphenobasilar junction (where it meets the occipital bone), which is considered the primary respiratory mechanism in CranioSacral Therapy. When the sphenoid is compressed, rotated, or otherwise restricted, it disrupts the cranial rhythm and can create widespread symptoms throughout the body. Because it houses the pituitary gland, sphenoid dysfunction can also correlate with hormonal imbalances, sleep disturbances, and stress responses.

Clinical patterns I commonly see:

In migraine treatment: The sphenoid bone tends to be a critical focus because restrictions here often manifest as frontal or temple headaches. The sphenoid’s connection to the ethmoid bone and its proximity to the ophthalmic nerve branch means that sphenoid compression can create the characteristic “pressure behind the eyes” sensation many migraine sufferers describe. I frequently find sphenoid restrictions in clients whose migraines worsen with stress or hormonal changes.

In TMJ treatment: The sphenoid bone connects directly to the temporal bones (which contain the jaw joint) through the sphenosquamous suture. When the sphenoid is restricted, particularly in rotation or sidebending patterns, it creates asymmetric tension on the temporal bones, which directly affects jaw alignment and movement. This is why some TMJ clients experience improvement in jaw symptoms when I work on the sphenoid, even though I’m not touching the jaw itself.

In vertigo treatment: The sphenoid bone’s relationship with the temporal bones (which house the inner ear balance structures) means sphenoid restrictions can affect vestibular function. I often find that clients with positional vertigo or balance issues have sphenoid compression patterns that create tension through the petrous portion of the temporal bones, where the semicircular canals are located.

In concussion recovery treatment: Impact forces traveling through the skull frequently create rotation or torsion patterns in the sphenoid bone. Because of its central position and connection to all other cranial bones, these patterns can persist long after the initial injury and contribute to ongoing symptoms like headaches, visual disturbances, difficulty concentrating, and sensitivity to light; all common post-concussion complaints.

Related treatment pages: Migraine Treatment | TMJ Treatment | Vertigo Treatment | Concussion Treatment

Temporal Bones

What they are:

The temporal bones are paired bones that form the sides and partial base of the skull, located roughly at temple level extending down toward the ears. Each temporal bone houses the structures of the inner and middle ear, including the cochlea (hearing organ) and the vestibular apparatus (balance system). The temporal bones also contain the temporomandibular joint (TMJ), the socket portion where the jaw articulates with the skull. These bones are critical for hearing, balance, and jaw function.

Why they matter in CST treatment:

During treatment, I assess the temporal bones’ position, rotation, and relationship to surrounding structures because restrictions here can affect hearing, balance, jaw function, and even emotional processing. The temporal bones need to move freely in what we call “external and internal rotation” as part of the cranial rhythm. When temporal bone mobility is restricted, often from jaw clenching, head impacts, ear infections, or dental work, it can compress the delicate structures inside the bone and create a cascade of symptoms. The temporal bones also connect to the occipital bone through the occiput-mastoid suture and to the sphenoid bone laterally, making them integral to overall cranial mechanics.

Clinical patterns I commonly see:

In TMJ treatment: The temporal bones literally house the TMJ socket, so any restriction, rotation, or compression pattern in these bones directly affects jaw alignment and function. I frequently find that one temporal bone sits more anteriorly (forward) than the other, creating asymmetric jaw mechanics that lead to clicking, popping, pain, or difficulty opening the mouth fully. Often, releasing temporal bone restrictions eliminates TMJ symptoms without ever directly working on the jaw joint itself.

In tinnitus treatment: The temporal bones house the cochlea and auditory nerve, so compression or restriction patterns here can affect hearing and create or contribute to tinnitus (ringing in the ears). I often find temporal bone restrictions in clients whose tinnitus began after jaw clenching, dental work, head impacts, or chronic ear infections. The petrous portion of the temporal bone (the dense pyramid-shaped part) is particularly important for tinnitus cases.

In vertigo treatment: Because the temporal bones contain the semicircular canals and vestibular organs responsible for balance, restrictions here can directly cause or contribute to vertigo and dizziness. I frequently work with clients whose vertigo improves when temporal bone mobility is restored, particularly in cases where the vertigo is positional (worse with certain head movements) or began after a head injury or ear infection.

In concussion recovery treatment: Head impacts often create compression or rotational patterns in the temporal bones, especially from side impacts or falls. These patterns can affect hearing, balance, and cognitive function, and many post-concussion clients report feeling “foggy” or having difficulty processing auditory information when temporal bone restrictions are present.

Related treatment pages: TMJ Treatment | Tinnitus Treatment | Vertigo Treatment | Concussion Treatment

Atlas (C1 Vertebra) aka A-O Joint

What it is:

The atlas is the first cervical vertebra (C1), the topmost bone of the spine that sits directly beneath the skull and supports the weight of the head. Named after the Greek Titan who held up the world, the atlas has a unique ring-shaped structure with no vertebral body, allowing the skull to rock forward and backward on top of it (the “yes” motion of nodding). The atlas articulates with the occipital bone above and the axis (C2) below, creating the most mobile segment of the entire spine. This high degree of mobility also makes it particularly vulnerable to misalignment and restriction.

Why it matters in CST treatment:

During treatment, I assess the atlas’s position and mobility because misalignment or restriction here affects the entire body. The atlas is where the skull meets the spine, so it’s literally the foundation for head position and the launching point for postural patterns throughout the body. When the atlas is rotated, side-bent, or compressed, it creates compensatory patterns down the entire spine and affects cranial mechanics above. The atlas also sits in close proximity to the brainstem, vertebral arteries, and numerous nerves exiting the skull, making its position critical for neurological function, blood flow to the brain, and overall nervous system health.

Clinical patterns I commonly see:

In chronic neck pain treatment: Atlas misalignment is one of the most common underlying causes of persistent neck pain and stiffness. The atlas’s relationship with the occipital bone and the attachment of deep suboccipital muscles means that when it’s rotated or restricted, these muscles remain chronically tight trying to stabilize an unstable joint. I frequently find atlas restrictions in clients with “text neck” from prolonged forward head posture, creating the chronic neck tension and stiffness that doesn’t respond well to massage alone.

In migraine treatment: The atlas’s proximity to the greater occipital nerve and its role in upper cervical mechanics means that atlas misalignment often contributes to cervicogenic migraines (headaches originating from the neck). When the atlas is rotated or compressed against the occipital bone, it can irritate the occipital nerves and create referral patterns into the head. Many of my migraine clients experience significant improvement when atlas alignment and mobility are restored.

In vertigo treatment: The atlas houses the vertebral arteries in small channels on each side – these arteries supply blood to the inner ear balance structures and parts of the brain involved in spatial orientation. When the atlas is misaligned, particularly in rotation, it can affect vertebral artery flow and contribute to vertigo, dizziness, or balance problems. I often find atlas restrictions in clients whose vertigo is positional or worsens with neck movement.

In concussion recovery treatment: The atlas is extremely vulnerable to impact forces during head injuries. Whiplash-type forces jam the atlas against the occipital bone, and rotational forces can create persistent misalignment patterns. These atlas restrictions can contribute to ongoing post-concussion symptoms including headaches, neck pain, dizziness, and difficulty concentrating. Restoring proper atlas position and mobility is often a key component of concussion recovery.

Sacrum

What it is:

The sacrum is the large, triangular bone at the base of the spine, formed by the fusion of five vertebrae (S1-S5) and positioned between the two hip bones (ilia) to form the back of the pelvis. The sacrum serves as the foundation of the spine and the anchor point for the pelvis, with the entire weight of the upper body transmitting through it to the legs. In CranioSacral Therapy, the sacrum is particularly significant because it’s one of the three primary attachment points of the dural membrane system (along with the skull and upper cervical spine), making it integral to craniosacral mechanics despite being at the opposite end of the body from the head.

Why it matters in CST treatment:

During treatment, I assess the sacrum’s position, mobility, and relationship to the cranial rhythm because the dural tube attaches firmly here – creating what we call the “craniosacral system.” The sacrum needs to move in subtle rocking motions (flexion and extension) synchronized with the cranial rhythm. When the sacrum is restricted, whether from falls, sitting postures, pelvic injuries, or childbirth trauma, it affects the entire dural system and can create symptoms anywhere from the head to the feet. This is why working on the sacrum can resolve headaches, and why skull work can improve lower back pain. The craniosacral system is truly a unified whole, with the sacrum as a foundational component.

Clinical patterns I commonly see:

In chronic back pain treatment: Sacral restrictions are extremely common in clients with persistent lower back pain. The sacrum’s position between the two hip bones means it’s vulnerable to rotational forces, compression from falls onto the tailbone, and chronic postural stress from prolonged sitting. When the sacrum is stuck in a rotated or compressed position, it creates ongoing tension through the lower back muscles and ligaments. Many clients are surprised when I work on their sacrum and their chronic back pain begins to resolve.

In migraine treatment: This connection surprises many people, but sacral restrictions often contribute to migraines through the dural tube connection. When the sacrum is restricted at the base of the spine, it creates tension through the entire membrane system that extends up to the skull. I frequently find that releasing sacral restrictions, particularly in clients whose migraines worsen with their menstrual cycle or who have a history of lower back issues, helps reduce migraine frequency and intensity.

In chronic neck pain treatment: The dural tube’s continuous nature means that sacral restrictions pull on the upper cervical attachments at the opposite end of the spine. Many of my chronic neck pain clients have underlying sacral restrictions from old falls, childbirth, or chronic sitting postures. When we release the sacral component, neck mobility often improves dramatically because we’ve addressed the “anchor point” that was creating compensatory tension up the chain.

Related treatment pages: Chronic Back Pain Treatment | Migraine Treatment | Chronic Neck Pain Treatment

Greater Occipital Nerve

What it is:

The greater occipital nerve is one of the major nerves that provides sensation to the back and top of the head. It originates from the C2 spinal nerve root, travels upward through the suboccipital muscles at the base of the skull, and emerges just below the occipital ridge before spreading across the scalp. This nerve passes through several layers of muscle and fascia in the upper neck, making it vulnerable to compression or irritation from muscle tension, fascial restrictions, or structural misalignments in the upper cervical spine and occipital bone.

Why it matters in CST treatment:

The greater occipital nerve’s pathway through the suboccipital region means that restrictions in this area, whether from occipital bone compression, atlas misalignment, or tight suboccipital muscles, can directly irritate this nerve. During treatment, I assess the tissues along the nerve’s pathway, particularly where it emerges at the occipital ridge. Many headaches that clients describe as “starting at the base of the skull and radiating up over the head” follow the exact distribution of the greater occipital nerve. By releasing restrictions in the structures this nerve travels through, I can often eliminate the source of nerve irritation and resolve chronic headache patterns.

Clinical patterns I commonly see:

In migraine treatment: The greater occipital nerve is frequently involved in cervicogenic migraines, which are headaches that originate from neck and skull base problems. When the suboccipital muscles are chronically tight or the occipital bone is compressed, this nerve becomes irritated and creates referral pain patterns that spread across the head. Many migraine sufferers describe feeling a tender spot at the base of the skull on one or both sides, and this is often the point where the greater occipital nerve is being compressed as it emerges through the suboccipital muscles.

In occipital neuralgia treatment: Occipital neuralgia is specifically defined as irritation or inflammation of the occipital nerves, with the greater occipital nerve being the most commonly affected. This condition creates sharp, shooting, or electric-shock-like pains at the back of the head that can extend up over the scalp. The nerve irritation often results from compression between the atlas vertebra and occipital bone, or from entrapment as the nerve passes through tight suboccipital muscles. Releasing these structural restrictions is essential for resolving occipital neuralgia.

In chronic neck pain treatment: Chronic tension in the suboccipital muscles, often from forward head posture, computer work, or sleeping positions, can create ongoing irritation of the greater occipital nerve. Many of my chronic neck pain clients also experience headaches because of this nerve involvement. They often describe a constant ache at the skull base that worsens with neck movements or prolonged positions. Releasing the suboccipital restrictions and improving occipital bone position typically resolves both the neck pain and associated headaches.

In concussion recovery treatment: Head impacts frequently create compression patterns in the occipital region that affect the greater occipital nerve. Post-concussion headaches often have a greater occipital nerve component, especially when the headache is worse with head movement or pressure at the skull base. Addressing the structural restrictions in this area is often crucial for complete concussion recovery.

Suboccipital Muscles

What they are:

The suboccipital muscles are a group of four small, deep muscles located at the base of the skull between the occipital bone and the first two cervical vertebrae (atlas and axis). These muscles, including the rectus capitis posterior major and minor, and the obliquus capitis superior and inferior, form the “suboccipital triangle,” a clinically significant area where the vertebral artery and greater occipital nerve pass through. Despite their small size, these muscles are densely packed with proprioceptive nerve endings (sensors that detect position and movement), making them crucial for fine motor control of head position and for providing the brain with detailed information about head and neck position in space.

Why they matter in CST treatment:

The suboccipital muscles are almost always involved in chronic head and neck problems. Their location between the skull and upper cervical spine, their density of nerve endings, and their tendency to become chronically tight from forward head posture, stress, or compensatory patterns make them a primary focus in many treatment sessions. During CranioSacral Therapy, I use gentle techniques to release suboccipital muscle tension because these muscles respond poorly to force but release beautifully with subtle, sustained contact. When suboccipital muscles are chronically tight, they compress the occipital bone against the atlas, irritate the greater occipital nerve, and restrict the mobility of the entire craniosacral system.

Clinical patterns I commonly see:

In chronic neck pain treatment: Suboccipital muscle tension is one of the most common patterns I find in chronic neck pain clients. Years of forward head posture from computer work, phone use, or reading create chronic shortening and tension in these muscles. Because they’re so deep and small, surface massage techniques often don’t reach them effectively. The gentle, sustained contact used in CranioSacral Therapy allows these muscles to release, often bringing dramatic improvement in neck pain and mobility that the client hasn’t experienced with other treatments.

In migraine treatment: Tight suboccipital muscles compress the greater occipital nerve as it passes through this muscle group, directly contributing to cervicogenic migraines and headaches that start at the skull base. Many of my migraine clients have exquisitely tender suboccipital muscles, and even very light pressure in this area reproduces their headache pattern. As these muscles release through CST, the nerve compression decreases and migraine frequency typically improves. The suboccipital muscles’ role in head position control also means that tension here creates compensatory patterns that can trigger migraines.

In occipital neuralgia treatment: The greater occipital nerve must pass through the suboccipital muscle group to reach the scalp, making these muscles a common site of nerve entrapment in occipital neuralgia. The combination of muscle tension, fascial restriction, and sometimes inflammation in this area creates the sharp, shooting pains characteristic of occipital neuralgia. Releasing suboccipital muscle tension and improving mobility of the occipital bone and atlas reduces nerve compression and is often essential for resolving occipital neuralgia.

In treating vertigo and other balance issues: Because the suboccipital muscles are so densely innervated with position sensors, chronic tension here can send aberrant signals to the brain about head position. The brain integrates this cervical proprioceptive information with vestibular input from the inner ear, and when the signals don’t match, particularly when suboccipital tension creates inaccurate position information, it can contribute to dizziness, balance problems, or cervicogenic vertigo. Releasing suboccipital muscle tension often improves these symptoms by restoring accurate position sense.

Tentorium Cerebelli

What it is:

The tentorium cerebelli is a horizontal sheet of dura mater (the tough outer membrane surrounding the brain) that separates the cerebellum in the lower back part of the skull from the cerebral hemispheres above it. Shaped somewhat like a tent (hence “tentorium”), this membrane structure attaches to the inner surface of the occipital bone posteriorly and extends forward to attach to the temporal bones and the sphenoid bone. The tentorium is particularly significant in CranioSacral Therapy because it’s a major component of the reciprocal tension membrane system, the interconnected dural membranes inside the skull that must maintain balanced tension for optimal cranial function.

Why it matters in CST treatment:

During treatment, I assess the tentorium because restrictions or imbalanced tension in this membrane structure create widespread effects throughout the cranial system. The tentorium’s attachments to the occipital, temporal, and sphenoid bones mean that restrictions here can affect multiple cranial structures simultaneously. When the tentorium is tight or pulling asymmetrically, which is often from head impacts, TMJ dysfunction, or chronic neck tension, it creates compensatory patterns throughout the entire cranial mechanism. Many clients are surprised to learn that their jaw problems relate to tentorium restrictions, or that releasing tentorium tension can resolve their chronic headaches.

Clinical patterns I commonly see:

In migraine treatment: Tentorium restrictions frequently contribute to migraines because tension in this membrane pulls on pain-sensitive structures inside the skull. The tentorium’s connection between the occipital bone (back of skull) and temporal/sphenoid bones (sides and front) means that restrictions here can create the classic “band of tension” across the head that many migraine sufferers describe. I often find tentorium involvement in clients whose migraines feel like pressure or tightness rather than throbbing pain.

In TMJ treatment: The tentorium’s direct attachment to the temporal bones creates a mechanical link between jaw function and this internal membrane structure. Chronic jaw clenching, teeth grinding, or TMJ dysfunction creates tension patterns that travel through the temporal bones into the tentorium. Conversely, tentorium restrictions can pull on the temporal bones in ways that affect jaw alignment and function. This is one reason why CranioSacral work on the head can resolve TMJ symptoms; we’re addressing the membrane restrictions that are affecting the bones that house the jaw joint.

In concussion recovery treatment: Head impacts often create tears, strain patterns, or adhesions in the tentorium. Because this membrane separates two major compartments of the brain, tentorium restrictions can affect cerebrospinal fluid dynamics and create persistent post-concussion symptoms. I frequently find tentorium involvement in clients whose concussion symptoms include headaches, visual disturbances, or difficulty with balance – all functions that relate to structures near the tentorium.

In vertigo treatment: The tentorium’s relationship with the temporal bones (which house the inner ear balance structures) means that membrane restrictions here can contribute to vertigo and balance issues. When the tentorium pulls asymmetrically on the temporal bones, it can affect the vestibular organs and create or worsen vertigo symptoms, particularly positional vertigo that’s affected by head movements.

Related treatment pages: Migraine Treatment | TMJ Treatment | Concussion Treatment | Vertigo Treatment

Dural Tube

What it is:

The dural tube is the membrane system that surrounds and protects the brain and spinal cord from the skull all the way down to the sacrum. It consists of three layers (dura mater, arachnoid mater, and pia mater), with the outermost layer, known as the dura mater being the tough, fibrous membrane most relevant to CranioSacral Therapy. The dural tube attaches firmly to the inside of the skull, the first two cervical vertebrae (C1 and C2), and the sacrum, creating what we call the “core link” in CST. This membrane system contains cerebrospinal fluid and creates a hydraulic system that extends from head to tailbone.

Why it matters in CST treatment:

The dural tube is central to CranioSacral Therapy because it’s the primary structure through which the cranial rhythm expresses throughout the body. During treatment, I’m constantly assessing the quality, amplitude, and symmetry of movement in the dural system. Restrictions anywhere along the dural tube, whether from trauma, inflammation, surgical scarring, or chronic postural stress, affect the entire system because the membrane is continuous from skull to sacrum. This is why I can work on someone’s head and they feel releases in their lower back, or why sacral work can resolve headaches. The dural tube is the connecting tissue that makes CranioSacral Therapy a whole-body approach even when working on specific areas.

Clinical patterns I commonly see:

In migraine treatment: Dural tube restrictions frequently contribute to migraines because tension in the membrane system can pull on pain-sensitive structures inside the skull. I often find that clients with chronic migraines have dural restrictions at the base of the skull (where the dura attaches to the occipital bone) or in the upper cervical area. When these restrictions release, many clients experience immediate reduction in headache frequency and intensity.

In chronic neck pain treatment: The dural tube’s firm attachment to the first two cervical vertebrae (C1 and C2) means that restrictions here create persistent neck tension and stiffness. Chronic forward head posture, whiplash injuries, and repetitive strain all create dural tension patterns that pull on these upper cervical attachments. This is often why neck pain doesn’t fully resolve with muscle work alone; the underlying membrane restriction needs to be addressed.

In concussion recovery treatment: Head impacts create shock waves through the dural system that can cause membrane restrictions and affect cerebrospinal fluid flow. I frequently find dural restrictions in post-concussion clients that contribute to ongoing symptoms like headaches, neck pain, brain fog, and sensitivity to light or noise. Releasing these dural restrictions is often essential for full concussion recovery.

In chronic back pain treatment: Because the dural tube extends from skull to sacrum, restrictions in the lower thoracic or lumbar spine can create dural tension that affects the entire system. I often find that chronic low back pain has a dural component, wherein the membrane system isn’t gliding freely over the spinal cord, creating persistent tension and pain. This is particularly common after spinal surgery, epidurals, or lower back injuries.

Vestibular System

What it is:

The vestibular system is the balance and spatial orientation system housed within the inner ear (temporal bone) on each side of the head. It consists of three semicircular canals (oriented in different planes to detect rotational movements) and two otolith organs, the utricle and saccule (which detect linear acceleration and head position relative to gravity). These structures contain specialized hair cells that move in response to head movements and fluid shifts, sending signals to the brain about the body’s position and movement in space. The vestibular system works in coordination with visual input and proprioception (body position sense) to maintain balance and spatial awareness.

Why it matters in CST treatment:

The vestibular organs sit within the petrous portion of the temporal bones, which is the dense, pyramid-shaped part of these bones. This means that temporal bone restrictions, compressions, or rotations can directly affect vestibular function by altering the bony housing of these delicate structures. During treatment, I assess temporal bone position and mobility because restrictions here are frequently involved in vertigo, dizziness, and balance problems. Additionally, the vestibular system’s connection to CSF dynamics and its proximity to cranial nerves means that broader craniosacral restrictions can affect balance function even without direct temporal bone involvement.

Clinical patterns I commonly see:

In vertigo treatment: Vestibular dysfunction is the most common cause of vertigo, and temporal bone restrictions frequently contribute to or perpetuate vestibular problems. I often find that one temporal bone is rotated or compressed compared to the other, creating asymmetric input to the brain from the two vestibular systems, and this mismatch creates dizziness or vertigo. Many clients with positional vertigo (worse with certain head movements) improve when temporal bone mobility is restored because the vestibular organs can then function more normally within their bony housing.

In tinnitus treatment: The vestibular system shares the inner ear space with the cochlea (hearing organ), and both are housed in the temporal bone’s petrous portion. Temporal bone restrictions that affect the vestibular system often also affect hearing and can contribute to tinnitus. Some clients with tinnitus also experience balance issues or mild dizziness, and this combination strongly suggests temporal bone and vestibular system involvement.

In concussion recovery treatment: Head impacts frequently affect the vestibular system, either through direct damage to the delicate hair cells or through temporal bone compression/rotation patterns that persist after injury. Post-concussion dizziness, balance problems, and motion sensitivity often have a vestibular component. Restoring normal temporal bone position and improving overall cranial mechanics helps optimize vestibular function and supports recovery from these symptoms.

In chronic neck pain with dizziness: When clients report both neck pain and dizziness or balance issues, there’s often a vestibular-cervical connection. The upper cervical spine (particularly the atlas and axis vertebrae) provides important proprioceptive input about head position that the brain integrates with vestibular information. When upper cervical structures are restricted or misaligned, the conflicting signals between cervical proprioception and vestibular input can create dizziness. Addressing both the cervical restrictions and temporal bone mechanics typically resolves these combined symptoms.

Related treatment pages: Vertigo Treatment | Tinnitus Treatment | Concussion Treatment | Chronic Neck Pain Treatment

CranioSacral Therapy Concepts & Techniques

CranioSacral Rhythm

What it is:

The CranioSacral rhythm is the subtle, rhythmic movement of the craniosacral system, which is a hydraulic system consisting of the brain, spinal cord, cerebrospinal fluid, and the membrane system (dura mater) that surrounds these structures from the skull to the sacrum. This rhythm is distinct from cardiac (heart) rhythm and respiratory (breathing) rhythm, typically cycling at 6-12 times per minute in healthy individuals. The rhythm can be felt throughout the entire body by trained practitioners and reflects the production, circulation, and reabsorption of cerebrospinal fluid as well as the mobility of cranial bones and the entire dural membrane system.

Why it matters in CST treatment:

The CranioSacral rhythm is the fundamental assessment tool in every treatment session. From the moment I place my hands on a client, I’m tuning into the quality, amplitude (strength), symmetry, and rate of their cranial rhythm. A healthy rhythm feels like a gentle tide, smooth, symmetrical, and consistent. Restrictions anywhere in the system show up as asymmetries, reductions in amplitude, or areas where the rhythm feels “stuck” or absent. By following the rhythm and working with restrictions that impede it, I’m supporting the body’s inherent self-correction mechanisms. When the cranial rhythm improves, becoming stronger, more symmetrical, and more fluid, clients typically experience symptom improvement.

Clinical patterns I commonly see:

In all treatment contexts: The CranioSacral rhythm quality tells me a tremendous amount before we even discuss symptoms. A weak or barely perceptible rhythm often indicates chronic stress, exhaustion, or long-term system compromise. An asymmetric rhythm (strong on one side, weak on the other) suggests structural restrictions, past injuries, or postural compensations. A very fast, agitated rhythm can indicate acute inflammation, pain, or nervous system hyperarousal. These rhythm patterns help me understand what the body is dealing with and where to focus treatment.

In concussion recovery: Post-concussion, the cranial rhythm is almost always significantly compromised: weak, irregular, or absent in certain areas. This reflects the system’s difficulty recovering from the impact trauma and often correlates with the severity and persistence of symptoms. As the rhythm strengthens and normalizes through treatment, concussion symptoms typically improve in parallel.

In chronic pain conditions: Clients with chronic pain often show restricted cranial rhythm in areas related to their pain patterns. For example, someone with chronic neck pain typically has reduced cranial rhythm amplitude in the upper cervical region and occipital area. As restrictions release and rhythm improves in these areas, pain typically decreases; the improved fluid dynamics and membrane mobility reduce inflammation and support tissue healing.

In stress-related conditions: The cranial rhythm is intimately connected to nervous system state. Clients experiencing chronic stress, anxiety, or nervous system dysregulation often have a rapid, shallow, or irregular cranial rhythm. Through CranioSacral Therapy, as the rhythm slows, deepens, and becomes more regular, clients typically report feeling calmer, sleeping better, and having improved stress resilience.

Cerebrospinal Fluid (CSF)

What it is:

Cerebrospinal fluid (CSF) is the clear, watery fluid that surrounds and cushions the brain and spinal cord, flowing within the space between the dural membranes (the subarachnoid space). Produced primarily by structures called choroid plexuses within the brain’s ventricles, CSF serves multiple critical functions: it cushions the brain and spinal cord from impact, delivers nutrients, removes metabolic waste products, and maintains optimal chemical environment for neurological function. In adults, approximately 500ml of CSF is produced daily, with about 150ml present in the system at any given time, continuously circulating and being reabsorbed.

Why it matters in CST treatment:

The production, circulation, and reabsorption of cerebrospinal fluid is what creates the CranioSacral rhythm that I assess and work with in every treatment session. Dr. John Upledger’s research demonstrated that the subtle expansion and contraction of the cranial bones and the rhythmic movement throughout the body correlates with CSF dynamics, as fluid is produced and pressure builds, tissues expand; as fluid is reabsorbed, tissues contract. When CSF flow is compromised, whether from cranial bone restrictions, dural membrane adhesions, or spinal restrictions, it affects the entire nervous system’s function. Many neurological symptoms relate to impaired CSF dynamics, and CranioSacral Therapy’s effectiveness comes largely from optimizing this fluid system.

Clinical patterns I commonly see:

In concussion recovery treatment: Head impacts can disrupt normal CSF production, circulation, or reabsorption patterns. This fluid dynamic disruption often underlies persistent post-concussion symptoms like headaches, brain fog, light sensitivity, and difficulty concentrating. When CSF flow is compromised, the brain’s ability to clear metabolic waste and maintain optimal chemical balance is impaired. As I work to restore normal cranial mechanics and improve CSF dynamics through CranioSacral Therapy, concussion symptoms typically improve in parallel.

In migraine treatment: Research suggests that some migraines relate to CSF pressure changes or flow abnormalities. I frequently observe that clients whose migraines improve with CranioSacral Therapy show significant changes in their cranial rhythm quality – suggesting improved CSF dynamics. The connection between CSF pressure, intracranial blood vessel dilation, and migraine pain means that optimizing fluid circulation can reduce migraine frequency and intensity.

In chronic headache conditions: Many persistent headache patterns relate to compromised CSF flow. When cranial bones are restricted, dural membranes are tight, or upper cervical structures are compressed, CSF cannot circulate optimally. This creates a situation where metabolic waste products accumulate and the brain’s environment becomes less than ideal, contributing to chronic headache patterns. Restoring normal CSF dynamics through cranial and spinal work often resolves headaches that haven’t responded to other treatments.

In tinnitus and vertigo: The inner ear structures are bathed in fluid (endolymph and perilymph) that maintains communication with CSF through small channels. Changes in CSF pressure or flow can affect inner ear function and contribute to tinnitus or vertigo symptoms. I’ve observed that clients whose tinnitus or vertigo improves with CranioSacral Therapy often show concurrent improvements in their cranial rhythm quality, suggesting that optimized CSF dynamics benefit inner ear function.

Still Point

What it is:

A Still Point is a therapeutic pause in the CranioSacral rhythm, a temporary cessation of the normal cranial rhythm cycle that allows the body’s self-correction mechanisms to reset and reorganize. During a Still Point, the usual rhythmic movement of cerebrospinal fluid and cranial bones briefly stops, creating what feels like a profound pause or “reset” in the system. Still Points can occur spontaneously when the body is ready to release a restriction, or they can be therapeutically induced by the practitioner using specific hand positions and gentle pressure. The Still Point technique was developed by Dr. John Upledger and is one of the foundational techniques in CranioSacral Therapy.

Why it matters in CST treatment:

Still Points are powerful treatment tools because they allow the nervous system to shift out of sympathetic (fight-or-flight) dominance into parasympathetic (rest-and-digest) mode. During a Still Point, clients often report feeling deeply relaxed, sometimes experiencing releases of held emotions or memories, and frequently notice immediate symptom relief when the rhythm resumes. The pause allows the body to recalibrate, like rebooting a computer, and often the cranial rhythm that emerges after a Still Point is stronger, more symmetrical, and more fluid than before. I use Still Point techniques in nearly every session, particularly when the system seems “stuck” or when a client is experiencing acute pain or stress.

Clinical patterns I commonly see:

In migraine treatment: Inducing a Still Point during an acute migraine can sometimes provide immediate relief. The therapeutic pause seems to interrupt the pain cycle and allows the vascular and nervous system patterns driving the migraine to reset. Many of my migraine clients report that the quality of pain changes during the Still Point, often softening or shifting location, and when the rhythm resumes, the migraine intensity has decreased.

In concussion recovery: Still Points are particularly valuable in post-concussion treatment because they help calm an overstimulated nervous system. After a head injury, the nervous system often gets “stuck” in a hypervigilant state, contributing to symptoms like light sensitivity, noise sensitivity, and difficulty sleeping. The deep parasympathetic shift that occurs during a Still Point helps reset this pattern and supports the body’s natural healing processes.

In chronic pain conditions: When working with chronic pain, whether neck pain, back pain, or headaches, Still Points help interrupt the pain-tension cycle. Chronic pain creates sympathetic nervous system dominance, which increases muscle tension, which increases pain. The Still Point creates a parasympathetic shift that allows muscles to release, inflammation to decrease, and the pain cycle to be interrupted.

In stress and anxiety: Still Points are profoundly calming for clients dealing with stress, anxiety, or nervous system dysregulation. The therapeutic pause seems to give the system permission to “let go” and many clients report feeling like they can finally take a full breath, or describe a sensation of tension draining out of their body during a Still Point.

Fascial Restriction

What it is:

Fascia is the continuous web of connective tissue that surrounds and connects every structure in the body – muscles, bones, organs, nerves, and blood vessels. When healthy, fascia is pliable and moves fluidly, allowing structures to glide past each other and the body to move freely. A fascial restriction occurs when this tissue becomes tight, adhered, or bound down, often due to injury, inflammation, surgery, repetitive stress, or poor posture. Fascial restrictions can develop anywhere in the body and create tension patterns that pull on distant structures because the fascial system is continuous throughout the entire body.

Why it matters in CST treatment:

During CranioSacral Therapy, I’m constantly assessing for fascial restrictions because they significantly affect the craniosacral system’s ability to function. Fascial restrictions can limit cranial bone mobility, restrict dural membrane movement, and impede cerebrospinal fluid flow. The gentle traction and unwinding techniques used in CST are particularly effective at releasing fascial restrictions because they work with the body’s natural release mechanisms rather than forcing tissue to change. Many clients are surprised to learn that their headaches are related to fascial restrictions in their neck and shoulders, or that TMJ pain connects to fascial tension patterns extending down into the chest.

Clinical patterns I commonly see:

In chronic neck pain treatment: Fascial restrictions in the neck are extremely common, particularly in the suboccipital region where numerous fascial layers converge. Years of forward head posture, computer work, or sleeping in awkward positions create fascial adhesions that pull on the occipital bone and upper cervical vertebrae. These restrictions don’t release well with massage or stretching alone because they’re in the deep fascial layers. CranioSacral Therapy’s gentle approach allows these deeper restrictions to unwind naturally.

In TMJ treatment: The temporomandibular joint is surrounded by multiple fascial layers that extend from the jaw down into the neck and chest. Jaw clenching, teeth grinding, or dental work often creates fascial restrictions that bind the temporal bones, limit jaw mobility, and create referral pain patterns into the head and neck. I frequently find that releasing fascial restrictions around the jaw, neck, and upper chest resolves TMJ symptoms more effectively than working directly on the jaw joint itself.

In concussion recovery treatment: Head injuries often create fascial restrictions throughout the neck, head, and even down into the upper back. The impact forces travel through the fascial system, creating areas of tightness and adhesion that persist long after the initial injury. These fascial restrictions can contribute to ongoing post-concussion symptoms including headaches, neck pain, and difficulty with head movements.

In chronic back pain treatment: Fascial restrictions in the thoracolumbar region (mid to lower back) can create persistent pain and limited mobility. These restrictions often develop from old injuries, surgical scars, or chronic postural compensations. Because fascia is continuous, restrictions in the lower back often connect to tension patterns extending up into the neck or down into the hips and legs.

Related treatment pages: Chronic Neck Pain Treatment | TMJ Treatment | Concussion Treatment | Chronic Back Pain Treatment

Energy Cyst

What it is:

An Energy Cyst is a term coined by Dr. John Upledger to describe localized areas where the body has isolated and contained the disruptive forces from an injury or trauma. When the body experiences impact, from accidents, falls, surgeries, or even emotional trauma, it must manage and dissipate these forces. Sometimes, if the force is too strong or the body too compromised to fully process it, the body walls off the disruptive energy into a contained area rather than allowing it to spread systemically. This isolated pocket of retained energy and its surrounding protective tissue response creates what we call an Energy Cyst.

Why it matters in CST treatment:

Energy Cysts are significant in treatment because they represent the body’s compensatory response to unresolved trauma. While the body’s strategy of isolating disruptive forces is initially protective, over time these areas of held energy create ongoing dysfunction, limiting tissue mobility, disrupting cranial rhythm, and requiring constant energy expenditure to maintain the isolation. During CranioSacral Therapy, I can often detect Energy Cysts as areas of heat, density, or resistance in the tissues. Using specific techniques including direction of energy and therapeutic pulse, I help the body release these retained forces so the area can return to normal function. This is where my Reiki training particularly enhances CST – I’m working simultaneously on both the physical restriction and the energetic component.

Clinical patterns I commonly see:

In whiplash injury treatment: Motor vehicle accidents almost always create Energy Cysts, particularly in the neck and upper back where impact forces concentrate. Even years after the accident, these areas of retained force continue creating symptoms, including ongoing neck pain, limited range of motion, headaches. Many of my whiplash clients report that the area where I’m working feels “hot” or that they experience memories or emotions from the original accident as the Energy Cyst releases. This release often brings dramatic improvement in symptoms that haven’t responded to other treatments.

In concussion recovery treatment: Head impacts frequently create Energy Cysts in the cranial structures, includingthe skull bones, dural membranes, and brain tissue itself. These retained impact forces can interfere with normal cranial mechanics and cerebrospinal fluid flow, contributing to persistent post-concussion symptoms. Releasing these Energy Cysts is often a key component of complete concussion recovery.

In chronic pain conditions: Long-standing pain patterns often have Energy Cyst components, not just from physical injuries but sometimes from surgical procedures or even intense emotional experiences that the body has “held” in specific areas. I frequently find Energy Cysts in the necks of clients with chronic tension, often relating back to old injuries, stressful life periods, or even birth trauma that the body never fully processed.

In TMJ Dysfunction treatment: Dental procedures, orthodontic work, or jaw injuries can create Energy Cysts in the temporal bones and surrounding jaw structures. The combination of physical force and the emotional stress of dental procedures often creates these retained energy patterns that continue affecting jaw function long after the original event.

Related treatment pages: Whiplash Injury Treatment | Concussion Treatment | Chronic Neck Pain Treatment | TMJ Treatment

Questions About Your Treatment?

If you encounter terminology during your CranioSacral Therapy session that isn’t covered in this glossary, please ask! I’m always happy to explain what I’m assessing, what I’m finding, and how it relates to your specific symptoms and treatment goals.

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