What makes isotretinoin different than other acne treatments?

• A. It targets all major pathways rather than just one or two
• B. It only reduces sebum production
• C. It has no systemic effects
• D. It is an antibiotic

Answer: (A)

Isotretinoin is different because it alters several key steps in acne development, not just one. Acne involves four main drivers: increased sebum production, abnormal follicular keratinization leading to clogged pores, bacterial growth (P. acnes), and inflammation. Isotretinoin dramatically reduces the size and activity of sebaceous glands, sharply cutting sebum output; it also helps normalize keratinization, has anti-inflammatory effects, and creates an environment less favorable for bacterial proliferation. This broad action touches multiple pathogenic pathways, which is why it stands apart from treatments that target only a single aspect like oil production, bacteria, or inflammation. It’s not an antibiotic and it has systemic effects, including teratogenic risks, so it requires careful monitoring.