Why Dermatological Medications Matter
Topical medications for skin conditions are commonly dispensed in pharmacy practice. The PTCE may include questions about common dermatological drug classes, their dosage forms, and key dispensing information.
Topical Corticosteroids
Hydrocortisone is available OTC in low strengths for minor skin irritation. Stronger topical corticosteroids like triamcinolone (Kenalog) and clobetasol (Temovate) require prescriptions. These vary in potency, and the appropriate strength depends on the condition being treated and the body area involved.
Topical Antibiotics
Mupirocin (Bactroban) is a commonly prescribed topical antibiotic for skin infections. OTC options include bacitracin and neomycin/polymyxin B (Neosporin). These are applied directly to infected or at-risk skin areas.
Acne Medications
Tretinoin (Retin-A) is a commonly prescribed topical retinoid for acne. Adapalene (Differin) is available OTC. Benzoyl peroxide products are widely available OTC and are often used in combination with other acne treatments.
Antifungal Topicals
Clotrimazole and terbinafine are available OTC for fungal skin infections like athlete's foot and ringworm. Prescription options like ketoconazole cream are used for more resistant infections.
Dosage Form Considerations
Topical medications come in various forms: creams, ointments, gels, lotions, and solutions. The choice of vehicle affects how the medication is absorbed and how it feels on the skin. Ointments are generally more occlusive and moisturizing, while creams are lighter and absorb more easily.
Exam Focus
For the PTCE, focus on recognizing common dermatological products by brand/generic name, understanding the difference between OTC and prescription options, and knowing basic facts about topical dosage forms.