25th November 2019

nih
17

What can cause involuntary muscle jerking?

Myoclonus describes a symptom and not a diagnosis of a disease. It refers to sudden, involuntary jerking of a muscle or group of muscles. Myoclonic twitches or jerks usually are caused by sudden muscle contractions, called positive myoclonus, or by muscle relaxation, called negative myoclonus.

What diseases cause involuntary muscle twitches?

Nervous system conditions that can cause muscle twitching include: Amyotrophic lateral sclerosis (ALS - Lou Gehrig disease) Neuropathy or damage to the nerve that leads to a muscle. Spinal muscular atrophy.

What can cause involuntary body movements?

In adults, some of the most common causes of involuntary movements include:
  • drug use.
  • the use of neuroleptic medications that are prescribed for psychiatric disorders over a long period.
  • tumors.
  • brain injury.
  • strokes.
  • degenerative disorders, such as Parkinson's disease.
  • seizure disorders.
  • untreated syphilis.
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