question: Q:A 35-year-old woman with type 1 diabetes mellitus comes to the emergency department for evaluation of a 1-month history of fever, fatigue, loss of appetite, and a 3.6-kg (8-lb) weight loss. She has also had a cough for the last 2 months. She reports recent loss of pubic hair. The patient immigrated from the Philippines 7 weeks ago. Her mother has systemic lupus erythematosus. She has never smoked and does not drink alcohol. Her only medication is insulin, but she sometimes misses doses. She is 165 cm (5 ft 5 in) tall and weighs 49 kg (108 lb); BMI is 18 kg/m2. She appears lethargic. Her temperature is 38.9°C (102°F), pulse is 58/min, and blood pressure is 90/60 mm Hg. Examination shows decreased sensation to touch and vibration over both feet. The remainder of the examination shows no abnormalities. Serum studies show:
  Na+ 122 mEq/L
  Cl- 100 mEq/L
  K+ 5.8 mEq/L
  Glucose 172 mg/dL
  Albumin 2.8 g/dL
  Cortisol 2.5 μg/dL
  ACTH 531.2 pg/mL (N=5–27 pg/mL)
  CT scan of the abdomen with contrast shows bilateral adrenal enlargement. Which of the following is the most likely underlying mechanism of this patient's symptoms?"? 
  {'A': 'Adrenal infarction', 'B': 'Adrenal hemorrhage', 'C': 'Pituitary tumor', 'D': 'Infection with acid-fast bacilli', 'E': 'Autoimmune adrenalitis'},