clonus


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Related to clonus: ankle clonus

clo·nus

 (klō′nəs)
n. pl. clo·nus·es
An abnormality in neuromuscular activity characterized by rapidly alternating muscular contraction and relaxation.

[New Latin, from Greek klonos, turmoil.]

clon′ic (klŏn′ĭk, klō′nĭk) adj.
clo·nic′i·ty (klō-nĭs′ĭ-tē, klŏ-), clo′nism (klō′nĭz′əm, klŏn′ĭz′əm) n.

clonus

(ˈkləʊnəs)
n
(Pathology) a type of convulsion characterized by rapid contraction and relaxation of a muscle
[C19: from New Latin, from Greek klonos turmoil]
clonic adj
clonicity n

clo•nus

(ˈkloʊ nəs)

n., pl. -nus•es.
a rapid succession of flexions and extensions of a muscle group during movement, often symptomatic of a nervous system disorder.
[1810–20; < New Latin < Greek klónos turmoil]
clon•ic (ˈklɒn ɪk) adj.
clo•nic•i•ty (kloʊˈnɪs ɪ ti, klɒ-) n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clonus - convulsion characterized by alternating contractions and relaxations
convulsion - violent uncontrollable contractions of muscles
Translations

clo·nus

n. Gr. clono, serie de contracciones rápidas y rítmicas de un músculo.

clonus

n clonus m
References in periodicals archive ?
In the 1960s, researchers noted that administering large doses of tryptophan to MAOI-treated patients resulted in clonus and hyperactive reflexes without hypertensive events.
She could perform ten toe pushups bilaterally, plantar responses were downgoing and there was no evidence of ankle clonus.
Ankle clonus and patellar clonus were positive bilaterally as was the Babinski sign.
Serotonin syndrome is a constellation of symptoms (hyperthermia, hyperreflexia, muscle clonus, tremor and altered mental status) caused by increases in serotonin levels in the central and peripheral nervous systems that can lead to mild or life-threatening complications such as seizures, muscle breakdown, or hyperthermia.
3-5 Most foot drop cases present with upper motor neuron signs, such as paresthesia, hyperreflexia, ankle clonus or Babinski signs.
Neurological examination revealed generalized hyperreflexia, bilateral ankle clonus, lead-pipe rigidity in all four limbs, and dilated but equal pupils.
La aplicacion de las pruebas de Hoffman, Babinski (18, 19) y clonus de tobillo, permitieron descartar compromiso de la neurona motora superior (20).
Her body was stiff with frequent clonus, her were pupils dilated but reactive; she was found to have shallow tachypnea and sinus tachycardia.
Seizures pass through phases of tonic flexion and extension of limbs, clonus period.
Within two weeks after starting sertraline, the woman showed numerous signs of serotonin toxicity: hypertension, tachycardia, anxiety, profuse sweating, bilateral ocular clonus, ankle clonus in the lower extremities, rhythmic jaw motions, and stuttering.
Patellar deep tendon reflexes were hyperactive, Achilles reflexes were absent, and patellar clonus were present bilaterally at the neurological examination.