A5.9 Persistent headache attributed to other trauma or injury to the head and/or neck

Diagnostic criteria:

1. Any headache fulfilling criteria C and D
2. Trauma or injury to the head and/or neck of a type not described above has occurred
3. 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
4. Headache persists for >3 months after its onset
5. Not better accounted for by another ICHD-3 diagnosis.