Myoclonus is a sudden and brief muscle twitch that you can't control. There are two types of myoclonus:

- Physiologic myoclonus, which is normal and happens to most people, involves quick muscle twitches. Hiccups and a jerking motion when you're falling asleep are examples of this kind of myoclonus.
- Pathologic myoclonus causes more widespread and long-lasting muscle twitches. These are a sign of a brain or nerve condition. Pathologic myoclonus can also be a sign of a reaction to a medication.



 

 ## Departments and Programs Who Treat This Condition

  department###  [Neurology](/departments/neurology) 

 A department providing specialized evaluation and treatment for a wide range of brain and nerve conditions, including stroke, Parkinson’s disease, epilepsy, headaches, memory loss… 

 

 

  department###  [Parkinson’s Disease and Movement Disorders Center](/departments/neurology/parkinsons-disease-and-movement-disorders-center) 

 A center within the Department of Neurology where movement disorder specialists and Parkinson’s specialists diagnose and treat Parkinson’s disease and related disorders with perso…