Intention tremor, also known as
cerebellar tremor, is a
dyskinetic disorder characterized by a broad, coarse, and low frequency (below 5 Hz)
tremor. The amplitude of an intention tremor increases as an extremity approaches the endpoint of deliberate and visually guided movement (hence the name intention tremor). An intention tremor is usually perpendicular to the direction of movement. When experiencing an intention tremor, one often overshoots or undershoots their target, a condition known as
dysmetria. Intention tremor is the result of dysfunction of the
cerebellum, particularly on the same side as the tremor in the lateral zone, which controls visually guided movements. Depending on the location of cerebellar damage, these tremors can be either unilateral or bilateral.