NEET PG / USMLE – MCQ 50

A 15-year-old girl is brought to the physician by her mother because of an 8-month history of fatigue; she has had a 6.8-kg (15-lb) weight gain during this period. The mother states that her daughter has been depressed for the past 2 months and recently failed a subject in school because she did not have the energy to complete a book report. The patient’s dog died 3 months ago. Her mother has major depressive disorder treated with paroxetine. The patient is 152 cm (5 ft) tall and weighs 68 kg (150 lb); BMI is 29 kg/m2. Her pulse is 50/min, and blood pressure is 100/50 mm Hg. Physical examination shows thinning hair and dry skin. Mental status examination shows a goal-oriented thought process and a depressed mood. Which of the following is the most likely cause of these findings?
A. Adjustment disorder
B. Bulimia nervosa
C. Chronic fatigue syndrome
D. Hypothyroidism
E. Major depressive disorder

Correct answer : D. Hypothyroidism