General anesthesia makes a person unconscious. People call this “put under” or “put to sleep.” But it isn’t the same as regular sleep. A person given general anesthesia cannot feel pain. And, the person won’t remember what happens during a medical procedure.
Regional anesthesia makes an area of the body numb to prevent the patient from feeling pain during or after a medical procedure. It can completely block sensation to a large area of the body. Regional anesthesia does not put a patient to sleep, but it is commonly used along with sedation. It may also be used with general anesthesia.
Opioids are a class of powerful drugs. They can control severe pain. Oxycodone, hydrocodone, and codeine are examples of prescription opioids. So are morphine and fentanyl.