Nerve Block Overview
Nerve blocks can be used as both diagnostic and treatment tools. A diagnostic nerve block involves numbing the particular nerve that seems to be causing the pain. Also known as a “test block,” the physician injects a local anesthetic into the nerve. The patient is monitored after the injection and if he/she finds relief, the source of the pain is likely confirmed. If the patient does not have any change in symptoms after the diagnostic nerve block, the physician can conclude that the pain is originating from another area.