PAEA Pediatrics End of Rotation (EOR) Practice Exam

Isotretinoin is the correct answer because it is a powerful oral retinoid specifically designed to treat severe acne that has not responded to other therapies. It works by targeting all four key pathophysiological routes of acne: it decreases sebum production, provides anti-inflammatory effects, normalizes keratinization, and inhibits the growth of Propionibacterium acnes, the bacteria associated with acne development. This multifaceted approach makes isotretinoin particularly effective for managing severe cases.

Additionally, isotretinoin is highly teratogenic, which means it can cause significant birth defects if taken during pregnancy. For this reason, strict guidelines are in place, such as the iPLEDGE program in the United States, to prevent fetal exposure. Pregnant women or those who might become pregnant while taking isotretinoin are strongly advised against its use unless they are enrolled in a risk management program.

In contrast, while topical retinoids and oral antibiotics can also be effective in treating acne, they do not carry the same level of teratogenic risk or comprehensive action on the various causes of severe acne as isotretinoin does. Oral contraceptives can help manage hormonal influences that exacerbate acne but do not address all