Clonic spasm

What is Clonic spasm?

Clonus (from the Greek for "violent, confused motion") is a series of involuntary, rhythmic, muscular contractions and relaxations. Clonus is a sign of certain neurological conditions, particularly associated with upper motor neuron lesions involving descending motor pathways, and in many cases is, accompanied by spasticity (another form of hyperexcitability). Unlike small, spontaneous twitches known as fasciculations (usually caused by lower motor neuron pathology), clonus causes large motions that are usually initiated by a reflex. Studies have shown clonus beat frequency to range from 3–8 Hz on average, and may last a few seconds to several minutes depending on the patient’s condition.

Questions and answers on "Clonic spasm"

Thoracic muscle spasms - MS diagnosed Sept 2011
I have been diagnosed with MS,i take Copaxone daily.Can lesions on the cervical and...

doctor1 MD


Thanks for the query

Regarding the spasms in MS, neuromuscular spasm is one of the most common symptoms occurring in MS. Spasms can be of two...

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