title: Demographic and clinical characteristics of patients with episodic migraine versus chronic daily headache.
abstract: We compared data from 243 patients with episodic migraine (EM) and 132 patients with chronic daily headache (CDH). We divided the latter group into those with tension-type headache only (CDH Type 1) and those with headaches having migrainous features (CDH Types 2 + 3) and compared each with the EM group and all three groups with one another. CDH Type 1 patients differed from those in the other groups by virtue of gender (more often male) and mean age at headache onset (older). The CDH Types 2 + 3 and EM groups differed only in that the former were more likely to have undergone a brain-imaging study. These data suggest that CDH Type 1 may represent a distinct headache syndrome, while CDH Types 2 + 3 closely resemble episodic migraine.
authors.affiliation: Department of Neurology, University of Alabama, Mobile, USA.
authors.forename: J
authors.initials: J
authors.lastname: Rothrock
authors.forename: M
authors.initials: M
authors.lastname: Patel
authors.forename: P
authors.initials: P
authors.lastname: Lyden
authors.forename: C
authors.initials: C
authors.lastname: Jackson
mesh_terms: D000328:Adult; D002140:California / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006261:Headache / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000453:epidemiology* / Q000209:etiology; D011446:Prospective Studies; D012307:Risk Factors