From Dog

Analgesia is defined as the relief or absence of pain in the presence of normal consciousness.

This distinguishes it from the global absence of pain associated with general anesthesia.

Regional analgesia is afforded with local or epidural anesthesia, whether given by injection, acupuncture or applied via dermal anesthetic creams.

General analgesia, as opposed to general anesthesia, applies to systemic drugs which provide pain relief throughout the body such as is seen with opioids or NSAIDs.

Drugs which are used for general analgesia include: