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In the practice of medicine (especially surgery and dentistry), anesthesia or anaesthesia (from the Greek "αναισθησία, anesthisia" meaning "no feeling") is a state of temporary induced loss of sensation or awareness. It may include analgesia (relief from or prevention of pain), paralysis (muscle relaxation), amnesia (loss of memory), or unconsciousness. A patient under the effects of anesthetic drugs is referred to as being anesthetized.
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