A 52-year-old woman has had slowly progressive weakness and weight loss of 9 kg (20 lb) for 4 months. She has never traveled outside of the USA. Her blood pressure is 82/50 mm Hg. Her skin shows diffuse hyperpigmentation. Plasma concentration of ACTH is markedly increased, and the serum concentration of cortisol is decreased. CT scans of the chest and abdomen disclose no mass lesions. Which of the following is the most likely etiology of this patient's disease?
A) Autoimmune
B) Congenital
C) Infectious
D) Metabolic
E) Neoplastic
plz give me the reasons for your answer. Thankz
A) Autoimmune
B) Congenital
C) Infectious
D) Metabolic
E) Neoplastic
plz give me the reasons for your answer. Thankz