MCAS and Cervical Instability Treatment

MCAS and Cervical Spine Instability: Understanding the Connection

At O'Keefe Matz Functional Health Clinic, we specialize in addressing Mast Cell Activation Syndrome (MCAS) through a functional medicine approach that identifies and treats the root cause of symptoms rather than just managing them. Over the years, we have encountered numerous patients suffering from MCAS alongside persistent neck pain and cervical spine instability. While neck pain is often dismissed as a secondary symptom, we investigate its role as a potential trigger for mast cell overactivation and histamine-related issues.

Many individuals independently explore upper cervical instability, not merely as an additional symptom, but as a potential root cause of their complex health issues. This leads to a crucial question: which comes first, autonomic nervous system dysfunction or immune-mediated allergies? At a minimum, we know they are interconnected. Elevated histamine levels and mast cell activation stimulate the autonomic nervous system, while autonomic dysfunction increases the likelihood of immune overactivation.

Patients often report discovering cranial cervical instability as a possible cause of their prolonged illness, including diagnoses of Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Postural Orthostatic Tachycardia Syndrome (POTS), and MCAS. A common denominator among them is chronic neck pain and cervical misalignment, which is seldom investigated as a potential cause rather than a consequence.

How Cervical Instability Affects MCAS and Histamine Regulation

The vagus nerve plays a crucial role in the regulation of mast cell activity and histamine release. When vagal nerve sensory afferents are disrupted due to cervical spine instability, the body's homeostatic balance fails, leading to widespread immune dysregulation. This condition, known as cervicovagopathy, disrupts gut barrier function, respiratory function, and systemic histamine regulation, all of which are key factors in MCAS.

Emerging research also suggests that MCAS, POTS, and hypermobile Ehlers-Danlos syndrome (hEDS) may form a disease cluster. Many patients with MCAS also experience POTS symptoms, connective tissue disorders, and nervous system dysregulation. Common overlapping symptoms include gastrointestinal distress (IBS, bloating, nausea), cardiovascular issues (hypotension, tachycardia), neurological symptoms (migraines, dizziness, neuropathy), and chronic pain, fatigue, and joint instability.

Dr. Matz's Therapeutic Modalities for MCAS and Cervical Instability

Upper Cervical Alignment

Manual techniques to restore cervical stability, alleviate nerve compression, and reduce autonomic dysfunction.

Cold Laser and Ultrasound

Reduces upper cervical inflammation, muscle spasms, and irritation of the vagus nerve.

Trigger-Point and Dry Needling

Releases myofascial tension in the cervical and suboccipital region to reduce referred pain and nervous system irritation.

qEEG Neurofeedback

Optimizes brainwave patterns to improve nervous system regulation and vagal tone.

Frequency-Specific Microcurrent (FSM)

Supports cellular healing, reduces inflammation, and enhances autonomic nervous system function.

The Functional Medicine Approach for MCAS

Dr. Shannon O'Keefe, DC, DCBCN, brings over 34 years of clinical experience in functional medicine and clinical nutrition to the investigation and management of MCAS. Her Diplomate in Clinical Nutrition (DCBCN, 2008) and post-graduate functional medicine training (since 2004) give her a strong foundation in reading the complex, multi-system presentations that MCAS often involves.

Dr. O'Keefe's approach starts with a detailed health history and symptom timeline, looking specifically for patterns of immune dysregulation, histamine intolerance, food reactivity, and gut involvement. From there, she uses targeted lab panels to assess immune function and inflammatory markers (including histamine and DAO enzyme activity), gut permeability and microbial balance, and hormonal and metabolic factors that can amplify mast cell reactivity.

The treatment plan that follows is built around those specific findings. Common components include dietary modifications to reduce histamine load, targeted supplementation to support gut lining integrity and mast cell stabilization, and coordination with Dr. Matz's structural and neurological work when cervical instability is a contributing factor. For patients whose MCAS involves significant gut dysfunction, learn more about functional medicine for gut health at O'Keefe Matz.

Why Patients Come to O'Keefe Matz for MCAS

MCAS is a condition that conventional medicine often misses or underdiagnoses. Many patients arrive at O'Keefe Matz after years of fragmented care, having been treated for individual symptoms without anyone connecting the pattern. What makes care here different is the combination of structural and functional medicine expertise under one roof.

Dr. Matz addresses the neurological and cervical drivers of mast cell dysregulation through chiropractic, FSM, cold laser, and neurofeedback. Dr. O'Keefe investigates the metabolic, immune, and gut-related factors through functional medicine testing and clinical nutrition. For patients dealing with MCAS alongside POTS, EDS, or chronic fatigue, this integrated approach means both sides of the picture are being addressed concurrently rather than in sequence.