MRS. S, 46, IS HOSPITALIZED for treatment of an adrenal gland disorder. On admission, she complained of weakness, fatigue, and difficulty falling and staying asleep. For the past 6 weeks, she's noticed weight gain and menstrual irregularities. The nurse observes that she has a moon-face appearance, with an obese trunk and thin arms and legs. Her skin appears fragile and parchment-like, with scattered ecchymoses and striae on her abdomen.