You are caring for a 42-year-old patient, Maria, who present…
You are caring for a 42-year-old patient, Maria, who presents to the clinic with complaints of increasing fatigue, muscle weakness, dizziness when standing, unintentional weight loss, and darkening of the skin on her elbows and creases of her hands. She reports salt cravings and occasional nausea. Vital signs show BP 94/60, HR 102, and K⁺ 5.8 mEq/L. A morning cortisol level is low, and ACTH levels are elevated. The provider orders additional endocrine testing and an ACTH stimulation test. Based on Maria’s presentation and initial labs, which diagnosis is most consistent with these findings?