The Effect of Osteopathic Treatment on Craniocervico-Mandibular Dysfunction

The goal of this clinical trial is to measure the effects of osteopathic manipulative treatment (OMT) on tissues of the craniocervico-mandibular unit (CCMU) in individuals with neck pain and headaches. The main questions to answer are: 1. How does OMT affect CCMU muscle stiffness 2. How does OMT affect jaw motion 3. How does OMT affect autonomic function 4. Is pain pressure threshold affected by OMT of the CCMU Participants will undergo the following interventions: 1. Photos taken to measure head and neck angles 2. Ultrasound 3. Smooth Pursuit Neck Torsion Test 4. Motion Capture 5. Autonomic Protocol 6. Algometry 7. Surveys

Inclusion Criteria: * male and female subjects 19-65 years old * neck pain and/or headaches of \> 1 month duration Exclusion Criteria: * prior cervical or thoracic spinal surgery * diagnosis cervical radiculopathy or pinched nerve in the neck * diagnosis of jaw disease or dysfunction * diagnosis of connective tissue or muscle disorders * diagnosis of cancer * previous spinal cord injury * Inflammatory arthritis and fibromyalgia * eye movement disorder * known pregnancy (hormonal changes affecting tissues could be a confounding variable) * tobacco use * known diabetes or prediabetes * allergy to ultrasound gel (propylene glycol) * history of manual therapy treatment within the past 2 weeks * history of injection for pain within the past month * currently taking muscle relaxers