cataplexy a temporary paralytic or hypnotic state, often brought on by strong emotion. —cataplectic, adj. electrotonus the state or condition of a nerve when an electric current is passing through it. —electrotonic, adj. neuralgia a sharp and paroxysmal pain along the course of a nerve. —neuralgie, adj. neurasthenia 1. Medicine. a nervous debility and exhaustion, as from overwork or prolonged nervous strain. 2. popularly, a nervous breakdown, —neurasthenie, adj. neurism Rare. the theory that all the body’s activity is controlled by nervous fluid. neuritis 1. an inflammation in a nerve. 2. a continuous pain in a nerve, associated with paralysis, loss of reflexes, and sensory disturbances. —neuritic, adj. neuroanatomy Medicine. the branch of anatomy that studies the anatomy of the nervous system. — neuroanatomical, adj. neurography the branch of neurology concerned with description of the nerves and nervous system. —neurographic, neurographical, adj. neurology the branch of medical science that studies the nerves and the nervous system, especially the diseases that affect them. —neurologist, n. —neurological, adj. neuromimesis Medicine. a psychosomatic disease. —neuromimetic, adj. neuropathology the pathology of the nervous system. —neuropathologist, n. —neuropathologic, neuropathological, adj. neuropathy any disease or disorder of the nerves. —neuropathist, n. —neuropathie, adj. neuropsychiatry the branch of medicine dealing with diseases affecting the mind and the nervous system. —neuropsychiatrist, n. —neuropsychiatric, adj. neurosis a functional disorder of the nervous system. See also psychology. —neurotic, n., adj. neurotomy the cutting of a nerve, as to relieve neuralgia. —neurotomist, n. polyneuritis neuritis that affects several or many nerves. prosopalgia neuralgia affecting the face. pseudesthesia Pathology. false or ghost sensations, such as those which seem to come from a missing limb. —pseudesthetic, pseudaesthetic, adj. rhizotomy the surgical cutting of the nerve roots of the spine, usually the sensory or posterior roots, to relieve pain or eliminate paralysis.