Dermatology is the branch of medicine dealing with the skin.A dermatologist is a specialist doctor who manages diseases related to skin, hair and nails and some cosmetic problems.

A dermatolopathologist is a pathologist or dermatologist who specializes in the pathology of the skin. This field is shared by dermatologists and pathologists. Usually a dermatologist or pathologist will complete one year of dermatopathology fellowship. This usually includes six months of general pathology, and six months of dermatopathology. Alumni of both specialties can qualify as dermatopathologists. At the completion of a standard residency in dermatology, many dermatologists are also competent at dermatopathology. Some dermatopathologists qualify to sit for their examinations by completing a residency in dermatology and one in pathology.

Therapies provided by dermatologists include, but are not restricted to the following:

• Excision and treatment of skin cancer
• Cryosurgery – for the treatment of warts, skin cancers, and other dermatoses.
• Cosmetic filler injections
• Intralesional treatment – with steroid or chemotherapy.
• Laser therapy – for both the management of birth marks, skin disorders (like vitiligo), tattoo removal, and cosmetic resurfacing and rejuvenation.
• Chemical peels for the treatment of acne, melasma, and sun damage
• Photodynamic therapy – for the treatment of skin cancer and precancerous growths.
• Phototherapy – including the use of narrowband UVB, broadband UVB, psoralen and UVB.
• Tattoo removal with laser.
• Tumescent liposuction – liposuction was invented by a gynecologist. A dermatologist (Dr. Jeffrey A. Klein) adapted the procedure to local infusion of dilute anesthetic called tumescent liposuction. This method is now widely practiced by dermatologists, plastic surgeons and gynecologists.
• Radiation therapy – although rarely practiced by dermatologists, many dermatologist continue to provide radiation therapy in their office.
• Vitiligo surgery – Including procedures like autologous melanocyte transplant, suction blister grafting and punch grafting.
• Allergy testing – ‘Patch testing’ for contact dermatitis.
• Systemic therapies – including antibiotics, immunomodulators, and novel injectable products.
• Topical therapies – dermatologists have the best understanding of the numerous products and compounds used topically in medicine.