Hypermobility & Comorbid Conditions Part 1: Understanding Craniocervical Instability (CCI) and Upper Cervical Instability (UCI)
For individuals living with hypermobile Ehlers-Danlos syndrome (hEDS) or symptomatic joint hypermobility, neck pain and neurological symptoms are often dismissed or misunderstood. One condition that may contribute to these symptoms is Craniocervical Instability (CCI), also known as Upper Cervical Instability (UCI).
Understanding this condition is an important step toward recognizing symptoms early and finding appropriate treatment options.
What Is Craniocervical Instability?
The upper cervical spine is where the base of the skull meets the top of the neck. This region is made up of two highly specialized joints:
- Atlanto-occipital (C0-C1) joint – connects the skull to the first cervical vertebra.
- Atlanto-axial (C1-C2) joint – connects the first and second cervical vertebrae.
These joints allow for a significant amount of head movement while protecting vital structures such as the brainstem, spinal cord, and surrounding nerves.
In people with joint hypermobility, the ligaments that stabilize these joints may be more lax than normal. When this laxity becomes significant enough to affect stability, it can contribute to Craniocervical Instability.
Common Symptoms of CCI in Hypermobility
Symptoms vary from person to person and often overlap with other conditions seen in hypermobility disorders. Some of the more common symptoms include:
- Persistent headaches
- Neck pain
- Dizziness or lightheadedness
- Brain fog or difficulty concentrating
- Fatigue
- Exercise intolerance
- Dysautonomia symptoms, such as rapid heart rate or feeling faint when standing
- Difficulty swallowing
- A stretching or pulling sensation in the throat
- Positional upright intolerance, where symptoms worsen when sitting or standing for extended periods
Because many of these symptoms are nonspecific, a comprehensive evaluation by a healthcare professional familiar with hypermobility disorders is essential.
Can a Cervical Collar Help?
For some individuals, a cervical collar may provide temporary external support and help reduce symptoms during certain activities or flare-ups.
However, cervical collars are not intended as a long-term solution. Extended use without guidance may contribute to muscle weakness. If recommended, they should be used under the supervision of a qualified healthcare provider.
Physical Therapy for Upper Cervical Instability
Physical therapy is often an important component of conservative management for individuals with CCI or UCI. Rather than focusing on aggressive stretching or strengthening, treatment emphasizes improving stability and motor control.
A rehabilitation program may include:
1. Postural Education
Learning how to find and maintain a neutral spine can reduce unnecessary stress on the upper cervical joints during daily activities.
2. Lumbopelvic Stabilization
Building strength and control through the core and pelvis creates a stable foundation for the spine and may reduce compensatory strain on the neck.
3. Deep Neck Stabilization Training
Specialized exercises, including the use of tools such as a laser head strap, can improve activation and coordination of the muscles responsible for upper cervical stability.
4. Vestibular Rehabilitation
Training the cervico-ocular reflex (COR) and vestibulo-ocular reflex (VOR) may help improve symptoms related to dizziness, balance, and visual stability.
5. Balance Training
Balance exercises can enhance proprioception and improve overall neuromuscular control, which is often impaired in people with hypermobility.
The Bottom Line
Not everyone with hypermobility develops Craniocervical Instability, but for those who do, recognizing the signs can lead to more appropriate evaluation and treatment. Conservative management—including individualized physical therapy focused on stability, motor control, and symptom management—can play an important role in improving function and quality of life.
If you experience persistent neck pain, dizziness, headaches, or worsening neurological symptoms alongside hypermobility, speak with a healthcare provider experienced in treating connective tissue disorders. A thorough assessment can help determine whether upper cervical instability may be contributing to your symptoms.
Reference
Henderson FC Sr, et al. Craniocervical instability in patients with hypermobility connective disorders: A narrative review. Front Neurol. 2023. https://pubmed.ncbi.nlm.nih.gov/36743665/