It was the most amazing surgery of the 1840s, the procedure you read about in all the history books. It’s the one depicted in ...

Anesthesia prevents pain during procedures by numbing you or putting you into a sleep-like state. Though considered very safe, it can cause side effects like nausea, chills, aches, and sleepiness.

General anesthesia is a combination of medications that a person breathes through a mask or receives through a catheter in a vein to cause a person to fall asleep. In contrast, regional anesthesia is ...