4.2.1 Probable primary exercise headache

Diagnostic criteria:
A. Either of the following:

    1. a single headache episode fulfilling criteria B and C
    2. at least two headache episodes fulfilling criterion B but not criterion C

B. Brought on by and occurring only during or after strenuous physical exercise
C. Lasting <48 hr
D. Not fulfilling ICHD-3 criteria for any other headache disorder
E. Not better accounted for by another ICHD-3 diagnosis.