Men undergoing ligation may experience some mild pain similar to that experienced when a muscle or needle is injected into a patient receiving an IV. Because anesthetic medication is present during the procedure, there is no pain associated with the procedure. The common clinical procedure used for male ligation today is the clamp-through vasectomy. At the beginning of the procedure, an anesthetic is injected through a syringe under the skin of the scrotum, which may cause pain similar to an intramuscular injection that lasts for a few seconds and is relieved. The effects of the anesthesia can be found to develop and begin to dissipate 1 to 2 hours after the procedure, at which time the patient may experience localized pain like a pinprick, which resolves about 24 hours after the procedure. Men may have a slight pain during the ligation surgery, which can be tolerated and will not develop into a very severe pain. After the operation, the discomfort symptoms promptly go to the regular hospital.