The curent Wikipedia aricle says:
Dermatology is the branch of medicine dealing with the skin and its diseases,
a unique specialty with both medical and surgical aspects. A dermatologist
takes care of diseases, in the widest sense, and some cosmetic problems of
the skin, scalp, hair, and nails.
The Wikipedia artcile
We will shortly provide you with more information about dermatology and dermatologists especially in India.