Paroxysmal hemicrania (PH) is an uncommon primary headache disorder of which about 80 cases have been well described in the literature (1). Its prevalence has been estimated to be 0.021% in the general population (2), corresponding to about 2% of cluster headache prevalence (3). The female/male ratio is 3 : 1 (4). Chronic PH (CPH), originally described by Sjaastad and Dale in 1974 (5), is characterized by an unremitting course and was the only form included in the first edition of the International Classification of Headache Disorders (ICHD-I) by the International Headache Society in 1988 (6). Subsequently, an episodic variety, EPH, was repeatedly described and then included in the ICHD-II in 2004, where EPH and CPH are coded, respectively, at 3.2.1 and 3.2.2 (7). Because of their rarity, it is impossible to determine a difference in prevalence between EPH and CPH.
Menstrual paroxysmal hemicrania, a new possible entity?
MAGGIONI, FERDINANDO;ZANCHIN, GIORGIO
2007
Abstract
Paroxysmal hemicrania (PH) is an uncommon primary headache disorder of which about 80 cases have been well described in the literature (1). Its prevalence has been estimated to be 0.021% in the general population (2), corresponding to about 2% of cluster headache prevalence (3). The female/male ratio is 3 : 1 (4). Chronic PH (CPH), originally described by Sjaastad and Dale in 1974 (5), is characterized by an unremitting course and was the only form included in the first edition of the International Classification of Headache Disorders (ICHD-I) by the International Headache Society in 1988 (6). Subsequently, an episodic variety, EPH, was repeatedly described and then included in the ICHD-II in 2004, where EPH and CPH are coded, respectively, at 3.2.1 and 3.2.2 (7). Because of their rarity, it is impossible to determine a difference in prevalence between EPH and CPH.Pubblicazioni consigliate
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