A Peripheral Nerve Block (Diagnostic) helps determine if a specific nerve is causing your pain. In this procedure, a doctor injects a numbing medicine, like lidocaine, near the nerve to temporarily block pain signals. This minimally invasive procedure often uses imaging like fluoroscopy or ultrasound for precise targeting. The goal is to see if pain lessens, confirming if the nerve is the pain source. Sometimes, two injections are needed for accurate diagnosis.

This helps identify pain from: - Chronic nerve damage from past injuries or surgeries. - Localized pain in areas like joints or limbs, due to conditions like arthritis. - Complex regional pain syndrome (CRPS) or other nerve issues. - It assesses nerves for potential neuromodulation responsiveness. Successful blocks may lead to peripheral nerve stimulation (PNS), using an implantable device for long-term pain relief.

If effective, it guides further treatments, such as targeted therapies or medications. Alternatives include imaging tests (MRI, CT) or EMG and nerve conduction studies for nerve and muscle function. Risks are low, including temporary soreness, infection, bleeding, neuritis, nerve damage, and rare allergic reactions.

Usually, you don't need to stop blood thinners, but if required, your doctor will advise. If sedation is involved, avoid eating/drinking for up to eight hours before.

After the injection, most return to usual activities in a few hours or by the next day. Pain relief varies from hours to several days, depending on the medication used. It's important to monitor changes in pain and record them to help determine the next treatment steps.