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...
Nerve pain. Nerve pain is caused by pressure on nerves or the spinal cord, or by damage to nerves. It is also called neuropathic pain. People often describe nerve pain as burning, shooting, tingling, or as a feeling of something crawling under their skin.