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...
The medical name for nerve pain is âneuralgia.â Trigeminal neuralgia affects a large nerve in the face called the trigeminal nerve. The nerve becomes irritated, causing pain. For example, an artery or a vein may be pressing against the nerve. The blood vessel may rub against the nerve each time the heart beats.