Fig. 2From: Field testing primary stabbing headache criteria according to the 3rd beta edition of International Classification of Headache Disorders: a clinic-based studyDistribution of participants diagnosed with primary stabbing headache at the initial visit according to ICHD-3 beta and ICHD-2 criteria. PSH: primary stabbing headache; ICHD-2: the second edition of the international classification of headache disorders; ICHD-3 beta: the third beta edition of the international classification of the headache disordersBack to article page