A 42-year-old female, who loves food laden with salt, is ver…
A 42-year-old female, who loves food laden with salt, is very puzzled about her recent unexplained weight loss. She also has complaints of lethargy. She has several episodes of nausea and vomiting. Because of her symptoms, she goes to her primary care physician. Upon questioning, she is surprised that her doctor asks her about salt craving but acknowledges this. On physical examination, there is a hyperpigmentation to her skin and mucus membranes. Her blood pressure is 85/60 mmHg. Her laboratory results show hyponatremia and hyperkalemia. Her serum ACTH level is elevated. Based on this information, which of the following conditions is the most likely diagnosis for this patient?