A Nerve Block is a procedure that disrupts specific nerve activity. It can help diagnose or treat certain types of neuropathic loss or alteration of smell or taste, or smell and taste disorders caused by nerve dysfunction or damage. Nerve blocks may be performed by injecting anesthetics or chemicals to the area, or by deliberately cutting or damaging certain parts of the nerve.
The Nerve Block procedure is performed by physician to anesthetize or numb a particular nerve in the body to diagnose or treat certain form of nerve disorder. The procedure involves the injection of a local anesthetic (like Lidocaine or Bupivicaine) or chemicals onto a target nerve or group of nerves. An example of a diagnostic nerve block is the glossopharyngeal nerve (innervating taste buds at the back of the tongue) block, performed to diagnose phantom taste. The local anesthetic works by interrupting conduction of electrical impulses along the target nerve for a limited period of time. The duration of the numbing effect varies with the local anesthetic used.