Headaches: OCs are "guilty by association".
D000569:Americas; D001695:Biology; D002560:Cerebrovascular Circulation; D003267:Contraception; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D019049:Developed Countries; D003933:Diagnosis; D004194:Disease; D004703:Endocrine System; D004967:Estrogens; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D006261:Headache; D006287:Health Planning Guidelines; D006728:Hormones; D008881:Migraine Disorders; D009656:North America; D010827:Physiology; D012816:Signs and Symptoms; D014481:United States; D014652:Vascular Diseases
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004967:Estrogens; D006728:Hormones
Americas; Biology; Cerebrovascular Effects; Contraception; Contraceptive Methods--side effects; Critique; Developed Countries; Diseases; Endocrine System; Estrogens; Examinations And Diagnoses; Family Planning; Headache--etiology; Hormones; Migraine--etiology; North America; Northern America; Oral Contraceptives, Combined--side effects; Oral Contraceptives--side effects; Physiology; Recommendations; Signs And Symptoms; United States; Vascular Diseases