Dermatology is the branch of medicine dealing with the skin and its diseases, a unique specialty with both medical and surgical aspects. The name of this specialty originated in the form of the (semantically wrong) words dermologie (in French, 1764) and, a little later, dermatologia (in Latin, 1777). A dermatologist takes care of diseases, in the widest sense, and some cosmetic problems of the skin, scalp, hair, and nails. Dermatologists have been leaders in the field of cosmetic surgery. Some dermatologist complete fellowships in surgical dermatology. Many are trained in their residency on the use of botox, fillers, and laser surgery. Some dermatologists perform cosmetic procedures including liposuction, blepharoplasty, and face lifts. Most dermatologists limit their cosmetic practice to minimally invasive procedures. Despite an absence of formal guidelines from the American Board of Dermatology, many cosmetic fellowships are offered in both surgery and laser medicine.