Spine adjustments tested for Post-Concussion relief

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18 or older * Diagnosed by a physician with post-concussion syndrome OR self-identifies as having a concussion based on responses to the HELPS screening tool * Has at least 3 of the following chronic symptoms at least 3 months since concussion: headache; dizziness; insomnia; fatigue; concentration difficulty; memory difficulty; intolerance to stress, emotions, and alcohol; irritability * Able to understand and communicate in English * Able to make informed decisions without assistance * Can wear an EEG net for 40 minutes * Can sit quietly for at least 15 minutes * Capable of walking on a treadmill at a comfortable pace for 10 minutes consecutively * Capable of moving from a supine to standing to supine position quickly and safely * Able to wear multiple electrodes placed on chest, back, and fingertips * Able to wear multiple sensors placed on head, back, pelvis, hands, arms, and legs * Has not had a chiropractic adjustment within the last one month * Has not received any other interventions within the past one month such as osteopathic spinal manipulation, physical therapy rehabilitation or manipulation, massage, body movement therapies, or acupuncture Exclusion Criteria: * Diagnosed with a serious mental disorder such as schizophrenia or bipolar disorder * Has malignant hypertension, which is a condition whereby their blood pressure rises suddenly and quickly * Has a known condition that causes syncope with postural changes, such as POTS * Has an implanted device (i.e., pacemaker) * Has a physical disability affecting their gait * Has a history of previous surgery or injury to the musculoskeletal structures or skull in the past three months * Has a prosthetic for any extremity * Has a hearing impairment or uses a hearing aid * History of stroke * Taking short-acting benzodiazepines, which includes midazolam and triazolam * Involved with current litigation related to a physical health-related injury * Untreated diagnosed osteoporosis or articular instability such as atlanto-axial instability * Currently pregnant * Unwilling to wash hair/head and remove hair products, accessories, braids, or wigs for assessment appointments * Deemed high-risk using the Columbia-Suicide Severity Rating Scale (C-SSRS) and referred for further evaluation (assessed at initial session in lab) * Experiences daily/chronic pain \>3 out of 10 on the visual analog scale (VAS)