Dermatologists are doctors trained to treat issues with skin. They are trained in the science of dermatology, which is concerned with the diagnosis and treatment of diseases of the skin, hair and nails. Dermatologists typically provide treatment for skin cancer, warts, cosmetic filler injections, hair removal with laser, hair transplantation, laser therapy for birthmarks and skin disorders, tattoo removal, acne, sun damage, liposuction, radiation therapy, vitiligo surgery, and allergy testing.

Sexologists are doctors who study human sexuality, including sexual behaviors, interests, and functions. They deal with problems regarding intimacy and relationships and also guide to achieve the best relationship. They mainly resolve sexual issues between the relationships. They conduct one to one sessions for sexual problems.

Trichology is a part of dermatology which deals with the study of hair and scalp. Trichologists are trained in the diagnosing and treating hair & scalp related problems such as hair breakage, hair loss, oily scalp, etc. The Trichologists perform a hair test know as "Hair Analysis". Some trichologists are also expert in advising people with hair-related problems like hair loss (alopecia) and hair pulling disorder (trichotillomania).