Oligomenorrhea and secondary amenorrhea in the adolescent.
D000293:Adolescent; D000568:Amenorrhea / Q000209:etiology / Q000628:therapy; D005260:Female; D006801:Humans; D008599:Menstruation Disturbances; D009839:Oligomenorrhea / Q000209:etiology / Q000628:therapy; D010808:Physical Examination; D014592:Uterine Hemorrhage / Q000628:therapy