An electrode is taped to the big toe, and three mild electrical impulses are administered. One tests for general feeling, one for heat, and one for pain. The first tingle means the end of that test. Some patients may have experienced the painful nerve conduction studies where the speed of electricity is measured as it passes along the length of a nerve. This is not that kind of examination.
Peripheral neuropathy can result in serious health difficulties.
Abnormal values might indicate ordinary but unfelt pressures that could result in injury. Infection can arise and not be felt in the early stages. Neuropathy, in association with poor circulation, is the most common underlying reason for amputation. Falling also becomes a problem when someone cannot feel where his or her feet are. These tests may also detect early symptoms of other neurological disorders.