🏥 USMLE Exam Prep

Cushing syndrome is caused by:

A Cortisol deficiency
B Chronic excess cortisol from exogenous steroids, pituitary adenoma (Cushing disease), or adrenal tumors
C Thyroid excess
D Growth hormone deficiency

✓ Correct Answer: Option B

Cushing syndrome: hypercortisolism. Most common cause: exogenous glucocorticoids. Endogenous: ACTH-dependent (pituitary adenoma 70%) or ACTH-independent (adrenal tumor). Moon face, buffalo hump, striae, hyperglycemia.

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