This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Secondary Amenorrhea, Subject name: Gynaecology & Obstetrics
Not a cause for secondary amenorrhea - 
Select and explain. 
A. Pregnancy, B. PCOD, C. Hyperprolactinaemia, D. Turner syndrome
D: Turner syndrome
Answer: D: Turner syndrome 
Explanation: Ans. is 'd' i.e., Turner syndrome Causes of secondary amenorrheaPhysiologicalo Pregnancyo LactationPathologicalGenital tracto Acquired stenosis/atresia of cervical canal following Electrocauterization, chemical bums & cervical amputation in Fothergill's repair, following conization forCIN & genital TB.o Asherman's syndromeo Vesicovaginal fistulaOvaryo Surgical extirpationo Radiotherapyo Autoimmune diseaseo Induction of multiple ovulation in infertility 1/t premature menopauseo POODo Resistant ovarian syndromeo Infections (mumps, TB etc)o Masculinising ovarian tumourso Premature menopauseNutritionalo Anorexia nervosa, bulimiao Extreme obesityo Excessive weight loss in athletes & ballet dancersPituitaryo Simmond's diseaseo Sheehan syndromeo Hyperprolactinaemiao Tumours like prolactinomas, chromophobe adenomaso Cushing's diseaseo Empty sella syndromeo Drugs - tranquillizers, OCPs, metaclopramide, dopamine blockers, antihypertensives, antidepressants, cimetidine & phenothiazine.Hypothalamuso GnRH deficiencyo Vigorous exerciseo Pseudocyesiso Brain tumourso Anorexia nervosaSuprarenalo Addison's diseaseo Adrenogenital syndromeo Suprarenal tumoursThyroido Hypothyroidismo Chest wall lesionso Grave's diseaseOthero Diabeteso Tuberculosis-liver diseaseo Renal diseaseo Severe anaemia, malnutrition