Treatment of Acute PTH With a CGRP Receptor mAb in Military Service Members and Civilians With mTBI

Inclusion Criteria: * Male or female ≥18 and ≤50 years of age * mTBI from any cause including impact, rotational acceleration, blast, or a combination, has occurred within the prior 7 days * PTH has occurred within the prior 7 days * Able to provide informed consent * Likely to stay in the same geographical area for the duration of study * Has a personal health care provider for standard of care PTH and TBI, including education, diagnostic procedures including neuroimaging and treatment, as deemed clinically indicated by the health care provider Exclusion Criteria: * Sustained a moderate or severe TBI, rather than mTBI, indicated with at least 1 of the following associated with head injury: 1. abnormal structural imaging 2. loss of consciousness for \>30 minutes 3. alteration of consciousness/mental state for \>24 hours 3. post-traumatic amnesia for \>1 day * Participants with ongoing chronic migraine or other chronic daily headache disorders at the time of injury