A5.1.1.1 Delayed-onset acute headache attributed to moderate or severe traumatic injury to the head

Diagnostic criteria:
A. Any headache fulfilling criteria C and D
B. Traumatic injury to the head has occurred, associated with at least one of the following:

  • 1. loss of consciousness for >30 min
  • 2. Glasgow Coma Scale (GCS) <13
  • 3. post-traumatic amnesia lasting >24 hr
  • 4. alteration in level of awareness for >24 hr
  • 5. imaging evidence of a traumatic head injury such as intracranial haemorrhage and/or brain contusion

C. Time of onset of headache is uncertain, and/or headache is reported to have developed >7 days after all of the following:

  • 1. the head injury
  • 2. regaining of consciousness following the head injury (when applicable)
  • 3. discontinuation of medication(s) that impair ability to sense or report headache following the head injury (when applicable)

D. Either of the following:

  • 1. headache has resolved within 3 months after the head injury
  • 2. headache has not yet resolved but 3 months have not yet passed since the head injury

E. Not better accounted for by another ICHD-3 diagnosis.