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.