A. Any headache fulfilling criteria C and D
B. Trauma or injury to the head and/or neck of a type not described above has occurred
C. Evidence of causation demonstrated by either or both of the following:
1. headache has developed in close temporal relation to the trauma or injury
2. other evidence exists of causation by the trauma or injury
D. Headache persists for >3 months after the trauma or injury
E. Not better accounted for by another ICHD-3 diagnosis.