Involuntary Muscle Jerks
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Limbs on one side of the body jerk when / just after waking up
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Content updated on Sep 6, 2022
About the symptom
It refers to sudden, brief involuntary twitching or jerking of a muscle or group of muscles.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Involuntary muscle jerks
Possible causes
- Paroxysmal exercise-induced dance athetosis
It is a movement disorder that causes involuntary, irregular, unpredictable muscle movements induced by exercise. The disorder can make someone look like they're dancing or look restless or fidgety.
Related serious diseases
- Juvenile myoclonic epilepsy (Jantz syndrome)
Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized seizures, and sometimes, absence seizures. They often occur when people first awaken in the morning. The exact cause is unknown. A family history of epilepsy or gene mutations may sometimes be linked to the condition.
- Eclampsia
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Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan