Table 1 Diagnostic criteria of PTH attributed to mild brain injury according to ICHD-2

Headache, no typical characteristics know, fulfilling criteria C and D

Headache trauma with all the following:

 Either no loss of consciousness, or loss of consciousness of less than 30-min duration

 Glasgow Coma Scale (GCS) ≥13

 Symptoms and/or signs diagnostic of concussion

Headache develops within 7 days after head trauma

One or other of the following:

 Headache resolves within 3 months after head trauma

 Headache persists but 3 months have not yet passed since head trauma