Dermatology is the branch of medicine dealing with the skin, nails, hair and its diseases. It is a specialty with both medical and surgical aspects. A dermatologist treats diseases, in the widest sense, and some cosmetic problems of the skin, scalp, hair, and nails.

Cosmetic dermatology might be defined as that aspect of the practice of dermatology that emphasizes looking good.” While cutaneous medicine and surgery focuses on the diagnosis, treatment, and prevention of skin disease, there is a significant aspect of the specialty directed towards improving the patient’s appearance.