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Learn about myoclonus, a movement disorder that can affect children.

Key points

  • Myoclonus is the sudden and rapid twitching of a muscle or a group of muscles.
  • Myoclonus is a sign of a condition affecting the brain and spinal cord.
  • In milder cases of myoclonus, children have a single muscle contraction followed by relaxation and a loss of muscle tone.
  • In more severe cases of myoclonus, groups of muscles contract involuntarily throughout the body.
  • Myoclonus is treated with drugs that slow down the central nervous system.
Last updated: February 27th 2020