Intention tremor

Intention tremor is a dyskinetic disorder consisting of wide tremor during voluntary movements. A tremor that gets worse when a person is moving is called an intention tremor. 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 aetiologies affecting the cerebellum, which include medical drugs, alcohol intoxication, focal lesions (including MS, stroke, and tumours). Primary cerebellar disease is relatively uncommon.