Hypertension, not pill use, found major factor in increased risk of subarachnoid hemorrhage.
D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications*; D012306:Risk; D013345:Subarachnoid Hemorrhage / Q000209:etiology*
D003276:Contraceptives, Oral