Myoclonic distonia or Myoclonus-dystonia syndrome is a rare syndrome having several subforms each traced to a different gene. The uniting feature is dystonia, but there are also rapid jerky movements resembling myoclonus.

Ethanol often ameliorates the symptoms very well, and so the syndrome is also called "Alcohol-responsive dystonia"; alcohol may be substituted by benzodiazepines that work through the same mechanism, such as clonazepam.