Dermatology is the medical discipline that deals with diagnosing and treating diseases related to the skin, hair, nails, and other cosmetic problems. It encompasses several specialties, including medical dermatology, which addresses conditions such as dermatitis, psoriasis, skin infections, rosacea, urticaria, and other skin diseases. Surgical dermatology involves performing excisional surgeries to treat skin cancer. Cosmetic dermatology focuses on the cosmetic treatment of the skin, hair, and nails, offering procedures such as laser treatments, scar removal, hair implants, and more.
Skin science and dermatology work together as a multidisciplinary field to understand the mechanisms of skin disorders and develop methods for their diagnosis and treatment. The skin, the largest organ of the body, protects internal structures from the external world. Skin science deals with the study of the anatomy and physiology of the skin. The skin is composed of three layers: epidermis, dermis, and fat or hypodermis. These layers function together to protect the body from bacteria, fungi, temperature, and chemical exposure.