A. Continuous or intermittent head pain fulfilling criterion B
B. Felt exclusively in an area of the scalp, with three of the following four characteristics:
2. fixed in size and shape
3. round or elliptical
4. 1-6 cm in diameter
C. Not fulfilling ICHD-3 criteria for any other headache disorder
D. Not better accounted for by another ICHD-3 diagnosis.