Anesthesiologists are the physicians trained to administer anesthetics, which are drugs designed to produced anesthesia (an insensibility to pain). Anesthetics can be administered on patients before, during, or after surgery. There are three general categories of anesthesia: 1) General anesthesia is affects a person’s entire state of consciousness, 2) Regional anesthesia affects a region of the body, and 3) Local anesthesia works like regional anesthesia, but it affects an even smaller area of the body. See below to locate an anesthesiologist in Greenville, SC.