Topical anti-inflammatory agents, including corticosteroids and immunomodulators, are the cornerstone of therapy for atopic dermatitis. All the following statements are true EXCEPT

Correct Answer: D

Rationale: Reduced efficacy is usually due to tachyphylaxis (diminished response), not true glucocorticoid resistance.

Correct Answer: C

Rationale: Spermicides have the highest failure rate even with perfect use, making them less reliable.

Correct Answer: A

Rationale: Dilutional hyponatremia occurs when there is excessive water retention relative to sodium. Conditions like heart failure cause fluid overload, leading to a dilution of serum sodium.

Correct Answer: A

Rationale: Oral food challenges are the gold standard for diagnosing food allergies.

Correct Answer: C

Rationale: Atelectasis results in dull percussion, not normal findings, due to lung collapse and volume loss.