Clonus is a type of involuntary movement symptom that involves abnormal muscle spasms. Myoclonus is a particular type of clonus involving multiple small twitches of muscles. Ankle clonus is a particularly type of abnormal foot reflex response that results in ankle/foot clonus. Tonic-clonic seizures are also a closely ...

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Summary: A series of rhythmic and involuntary muscle contractions (at a frequency of about 5 to 7 Hz) that occur in response to an abruptly applied and sustained stretch. ...1,2

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Causes of Clonus

Some of the causes of the condition may include: Causes of Clonus:

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Causes List for Clonus

Possible causes of Clonus (or similar symptoms) may include:4

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  1. [from HPO]
  2. Source: GTR (NCBI/NIH): gtr/ conditions/ CN001966/ 
  3. Source: Human Phenotype Ontology
  4. Source: Algorithmically Generated List

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