5.1.1 Acute headache attributed to moderate or severe traumatic injury to the head

Diagnostic criteria:
A. Headache fulfilling criteria for 5.1 Acute headache attributed to traumatic injury to the head
B. Injury to the head associated with at least one of the following:

    1. loss of consciousness for >30 min
    2. Glasgow Coma Scale (GCS) score <13
    3. post-traumatic amnesia1 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.

Note:
1. The duration of post-traumatic amnesia is defined as the time between head injury and recovery of memory of current events and those occurring in the last 24 hours.