Medical Definition of TONUS. 1. : tone 2a. 2. : a state of partial contraction that is characteristic of normal muscle, is maintained at least in part by a continuous bombardment of motor impulses originating reflexly, and serves to maintain body postureâcalled also muscle tone; compare clonus.
Neuralgia is the definitive term for nerve pain. Words ending in -algia indicate pain. A closely related word is neuropathy. It indicates an injury, disease, deterioration, defect or other abnormality of the nerve, which usually produces pain, pos...
Common Nerve Problems That Cause Foot Pain. Morton's Neuroma. A Morton's neuroma is a benign thickening of the nerve that runs between the third and fourth toes. Typical symptoms include a burning or shooting pain in the area between the third and fourth toes, most often with walking.