A nerve block is the injection of a local anesthetic next to a nerve. It relieves pain by interrupting the pain signals that would otherwise be sent to your brain.
Nerve blocks are commonly used to diagnose the source of chronic pain. Nerve blocks may also be used:
- To control your pain when drugs or other treatments failed or caused side effects.• To predict how pain will respond to long-term treatments.
- For short-term pain relief after some surgeries and other procedures.
- For anesthesia during some procedures.