Getting to the cause of headaches.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006261:Headache / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D006801:Humans; D008297:Male; D008487:Medical History Taking; D008875:Middle Aged; D008881:Migraine Disorders / Q000175:diagnosis; D010507:Periodicity