Medical Dermatology is used to diagnose, treat, and prevent diseases that affect the skin, hair, and nails. A dermatologist is a doctor who specializes in treating the skin, hair, nails, and mucous membranes (e.g., lining inside the mouth, nose, and eyelids.) Dermatologists diagnose and treat more than 3,000 different diseases. These diseases include but are not limited too, skin cancer, eczema, acne, psoriasis, and nail infections.

Dermatologists also improve the appearance of their patients. For example, a dermatologist can help patients diminish wrinkles, age spots, less noticeable acne scars, and improve looks following surgery to remove skin cancer. Dermatologists see patients of all ages- from newborns to people older than 100 years of age.