Dermatology studies the skin as an organ—its layers, barrier functions, and role in systemic health—while addressing disorders that range from benign rashes to life-threatening disease. This volume presents the foundation by explaining skin anatomy, physiology, and basic diagnostic approaches. It then surveys common dermatoses, their clinical appearances, pathogenesis, and first-line management strategies. High-quality clinical images, flowcharts for differential diagnosis, and concise treatment tables aid rapid recognition and therapy selection. Chapters also cover skin pharmacology, topical formulations, and basic procedural skills. Written for medical students, residents, and primary care clinicians, it emphasizes practical, day-to-day dermatologic care.