The word tumescent refers to anything that is swollen and firm. In the tumescent technique for liposuction, a large volume of very dilute solution of local anesthesia (lidocaine and epinephrine) is infiltrated (injected) into the fat beneath the skin, causing the targeted area to become tumescent, in other words, swollen and firm. The local anesthetic lidocaine in the tumescent solution provides such complete local anesthesia, that it eliminates the need for general anesthesia, or IV sedation. The drug epinephrine (adrenalin) provides profound localized vasoconstriction that it virtually eliminates surgical bleeding during tumescent liposuction. By eliminating the risks of general anesthesia and the risks of excessive surgical bleeding, the tumescent technique for liposuction totally by local anesthesia has eliminated the greatest dangers associated with the older forms of liposuction.