A to Z: Myoclonusenparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgLearn more about the central nervous system and symptoms of nervous system disorders.myoclonus, epilepsy, Parkinson's disease, Alzheimer's disease, multiple sclerosis, cancer, brain tumors, spinal cord injuries, central nervous system, stroke, hiccups, muscles, muscle contraction11/06/201204/09/201909/02/2019da5951e3-da8e-487a-b1d4-9cf559276ef0https://kidshealth.org/ws/RadyChildrens/en/parents/az-myoclonus.html/<p><em>May also be called: Muscle Twitch; Muscle Jerk</em></p> <p>Myoclonus (my-o-<strong>klo</strong>-nus) is a sudden, involuntary twitching, jerking, or contraction of a <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/bones-muscles-joints.html/">muscle</a> or group of muscles.</p> <h3>More to Know</h3> <p>Muscles are controlled by electrical impulses in the central <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/brain-nervous-system.html/">nervous system</a>. Sometimes, even healthy people experience an abnormal electrical impulse that can cause a muscle or group of muscles to contract suddenly. Hiccups are an example of this type of contraction, and so are the muscle twitches that many people experience as they try to fall asleep.</p> <p>Brief myoclonus in a single muscle can be a normal, harmless occurrence, but in some cases involuntary muscle twitching can be a symptom of a serious condition like <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/epilepsy.html/">epilepsy</a>, stroke, brain tumors, infection, multiple sclerosis, genetic disorders, metabolic disorders, or an injury to the brain or spinal cord.</p> <h3>Keep in Mind</h3> <p>In healthy people, brief, occasional muscle twitches are generally nothing to worry about. If myoclonus happens a lot, lasts long, or is associated with other symptoms, it should be evaluated by a doctor to determine if an underlying condition is the cause. Treatment for myoclonus usually involves treating the muscle contractions and their underlying cause with medications.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
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EpilepsySeizures are a common symptom of epilepsy, a condition that affects millions of people worldwide. Learn all about epilepsy, including what to do if you see someone having a seizure.https://kidshealth.org/ws/RadyChildrens/en/teens/epilepsy.html/85df049a-dc59-41a5-b92c-421ea2d711be
StrokesThis "brain attack" happens when blood flow to the brain stops, even for a second. Often, kids who have a stroke can learn to use their arms and legs and speak again through brain retraining.https://kidshealth.org/ws/RadyChildrens/en/parents/strokes.html/5539d27a-a31c-459d-9bfc-94b934761cda
What Causes Hiccups?Wonder why hiccups happen? Find out more in this article for kids.https://kidshealth.org/ws/RadyChildrens/en/kids/hiccup.html/6454fac2-0dd1-4df9-8616-973eb460d9d6
What Causes Muscle Twitches?Find out what the experts have to say.https://kidshealth.org/ws/RadyChildrens/en/teens/twitches.html/cb0bea40-baf6-4701-a245-558d3fe80966
Why Does My Body Jerk Before I Fall Asleep?Find out what the experts have to say.https://kidshealth.org/ws/RadyChildrens/en/teens/sleep-start.html/96c8b99f-10c1-4034-945a-f8455e1d332a