Anesthesia is the name of a group of drugs that temporarily desensitize an area of ​​the body, thereby reducing pain caused by irritants or minor skin or surgical procedures. mucosa. Local anesthetics can be given as an injection, topical, or spray. Topical formulations are often used to relieve the burning sensation of sunburn, burns, insect stings, pain during injections, or certain other skin procedures. Like all drugs, the use of local anesthetics is subject to undesirable effects, including allergies.