Headache as viewed by the internist.
D005260:Female; D006261:Headache / Q000209:etiology*; D006632:Histamine; D006801:Humans; D006973:Hypertension / Q000150:complications*; D008297:Male; D008881:Migraine Disorders / Q000150:complications*; D013315:Stress, Psychological / Q000150:complications*
D006632:Histamine