The sensory nerve action potential (SNAP) is the electrical response recorded from a sensory nerve when it is stimulated during a nerve conduction study. It reflects how many sensory nerve fibers are working and how well they conduct, which makes it one of the most sensitive measures of peripheral nerve function. In CMT, the SNAP is often reduced or absent, an early sign of the disease’s effect on the sensory nerves.
A Name That Does Too Much Work
Jean-Martin Charcot's name appears throughout medicine, but nowhere does it create more confusion than in the foot. Learn why the CMT foot and Charcot neuroarthropathy, also known as Charcot foot, share a name yet differ in how they develop, appear, and are managed.
