Plastic surgery is a surgical specialty involving restoration, reconstruction, or alteration of the human body. It can be divided into two main categories: reconstructive surgery and cosmetic surgery. Reconstructive surgery covers a wide range of specialties, including craniofacial surgery, oral and maxillofacial surgery, hand surgery, microsurgery, and the treatment of burns. This kind of surgery focuses on restoring a body part or improving its function. In contrast, cosmetic surgery focuses solely on improving the physical appearance of the body.