NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is the main cause of Cushing's syndrome?

  1. Lack of cortisol production

  2. Excessive production of cortisol or intake of exogenous steroids

  3. Insufficient adrenal gland activity

  4. Overproduction of adrenaline

The correct answer is: Excessive production of cortisol or intake of exogenous steroids

Cushing's syndrome is a condition that is caused by excessive production of cortisol or intake of exogenous steroids. It is not caused by lack of cortisol production, which is a symptom of Cushing's syndrome. Insufficient adrenal gland activity is not related to Cushing's syndrome, and overproduction of adrenaline does not lead to this condition. Therefore, the most appropriate answer is B Excessive production of cortisol or intake of exogenous steroids.

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