Uncontrolled or slow movement is defined as a problem with muscle tone, usually in large muscle groups, that leads to slow involuntary contractions of the head, limbs, trunk, or neck.

See also:

• Movement - unpredictable or jerky
• Stereotypic movement disorder
• Tremor
• Uncoordinated movement
• Uncontrollable movements

The slow sinuous twisting movements of muscles (athetosis) or sustained muscle contraction (dystonia) may be caused by a number of conditions, including cerebral palsy, encephalitis, drug side effects, a liver disease called hepatic encephalopathy, and Huntington's chorea.

Additionally, there are situations where two conditions, for example both a brain injury and a medication, interact to cause the abnormal movement when neither alone would cause a problem.

The abnormal movement may be reduced or disappear during sleep, but emotional stress makes it worse. Abnormal and sometimes grotesque postures may occur because of these movements.

• Encephalitis
• Hepatic encephalopathy
• Medication side effects
• Cerebral palsy
• Genetic diseases
• Stroke