title: Headache in the elderly: an evaluation of risk factors.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D005260:Female; D006261:Headache / Q000453:epidemiology* / Q000503:physiopathology; D006306:Health Surveys; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D012306:Risk; D012737:Sex Factors