what does a dermatologist do?
<answer> A dermatologist treats diseases, in the widest sense, and some cosmetic problems of the skin, scalp, hair, and nails. <context> 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.t 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.