Infectious Diseases – DERM 2025 | Exam Q&A (50+) | Erythrasma, Necrotizing Fasciitis, Monkeypox | USMLE, PA, Med School

This document features over 50 detailed exam-style questions and verified answers focused on dermatologic infectious diseases for the DERM 2025 course. Designed to prepare students for high-stakes exams, it provides an in-depth review of skin-related infections caused by bacteria, viruses, fungi, and parasites. Key topics include Erythrasma, Otitis externa (including swimmer’s ear and malignant forms), Perichondritis, Necrotizing fasciitis (Type I and II), and systemic toxin-mediated infections such as Toxic Shock Syndrome and Puerperal Sepsis. It also explores rare and significant infections such as Leprosy (Hansen’s disease), Ramsay-Hunt Syndrome, and emerging viral threats like Monkeypox. Fungal and parasitic infections like Sporotrichosis, Cutaneous Leishmaniasis, and Cutaneous Larva Migrans are explained with diagnostic clues and first-line treatments. The Q&A format is ideal for quick review or detailed study, making it suitable for students preparing for clinical rotations, subject exams, or standardized tests such as the USMLE. Each answer is concise, evidence-based, and reflects current medical guidelines, making this document a trusted resource. Relevant for: Medical students (MD/DO) Physician assistant (PA) students USMLE Step 1 & 2 CK preparation Nursing students in advanced clinical practice Courses in Dermatology, Infectious Disease, or Internal Medicine Keywords: infectious diseases, dermatology, DERM 2025, erythrasma, otitis externa, perichondritis, erysipeloid, necrotizing fasciitis, toxic shock syndrome, puerperal sepsis, leprosy, hansen’s disease, ramsay-hunt syndrome, monkeypox, sporotrichosis, cutaneous leishmaniasis, larva migrans, clinical exam questions, USMLE review, PA program, board prep