is a dyskinetic
disorder consisting of wide tremor
during voluntary movements. The tremor worsens when a person is moving. It is the result of dysfunction of the cerebellum
, in particular of the cerebellar hemispheres ("cerebro-cerebellum"), and is therefore part of the characteristic symptoms of cerebellar ataxia
There is a very wide differential diagnosis of etiologies affecting the cerebellum, which include medical drugs, alcohol intoxication, focal lesions (including multiple sclerosis, stroke, and tumors). Primary cerebellar disease is relatively uncommon.
Intention tremor is not to be confused with a resting tremor as seen in Parkinson's disease.