| spasmus | Synonym: spasm. Origin: L. Fr. G. Spasmos, spasm (05 Mar 2000) |
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| spasmus caninus | The semblance of a grin caused by facial spasm especially in tetanus. Synonym: canine spasm, cynic spasm, risus sardonicus, sardonic grin, spasmus caninus, trismus sardonicus. Origin: L. Risus, laugh + caninus, doglike (05 Mar 2000) |
| spasmus coordinatus | Compulsive movements, such as imitative or mimic tics, festination, etc. (05 Mar 2000) |
| spasmus glottidis | A spasmodic closure of the glottis, lasting a few seconds, followed by a noisy inspiration. Compare: laryngitis stridulosa. Synonym: pseudocroup, spasmus glottidis. (05 Mar 2000) |
| spasmus nictitans | Involuntary spasmodic winking. Synonym: spasmus nictitans, winking spasm. (05 Mar 2000) |
| spasmus nutans | A fine nystagmus, sometimes rotary, sometimes monocular, associated with head-nodding movements. Synonym: nodding spasm. (05 Mar 2000) |
| spastic | 1. Of the nature of or characterised by spasms. 2. Hypertonic, so that the muscles are stiff and the movements awkward. 3. A person exhibiting spasticity, such as occurs in spastic paralysis or in cerebral palsy. Origin: Gr. Spastikos (13 Nov 1997) |
| spastic abasia | Abasia due to a spastic contraction of the muscles when an attempt is made to walk. (05 Mar 2000) |
| spastic anaemia | Local anaemia resulting from nontransitory contraction of the arterial vessels in the affected region. (05 Mar 2000) |
| spastic colitis | See Syndrome, irritable bowel. (12 Dec 1998) |
| spastic colon | A bowel disorder with no demonstrable organic abnormality. Often referred to as a functional bowel disorder or spastic colon. Symptoms include episodic, crampy abdominal pains often related to anxiety. (27 Sep 1997) |
| spastic diplegia | A type of cerebral palsy in which there is bilateral spasticity, with the lower extremities more severely affected. Compare: flaccid paralysis. Synonym: Erb-Charcot disease, infantile diplegia, Little's disease, spastic spinal paralysis, tabes spasmodica. (05 Mar 2000) |
| spastic dysarthria | Dysarthria caused by lesions along the corticobulbar tracts. Synonym: rigid dysarthria. (05 Mar 2000) |
| spastic dysphonia | A spasmodic contraction of the intrinsic muscles of the larynx excited by attempted phonation, producing either adductor or abductor subtypes caused by central nervous system disease. A localised form of movement disorder. Synonym: phonic spasm, spastic dysphonia. (05 Mar 2000) |
| spastic ectropion | Ectropion of the lower eyelid as a result of ocular irritation. (05 Mar 2000) |