Movement disorder

For the journal, see Movement Disorders (journal).

Movement disorder
Specialty	Neurology Psychiatry

Movement disorders are clinical syndromes with either an excess of movement or a paucity of voluntary and involuntary movements, unrelated to weakness or spasticity. Movement disorders present with extrapyramidal symptoms and are caused by basal ganglia disease. Movement disorders are conventionally divided into two major categories- hyperkinetic and hypokinetic.

Hypokinetic movement disorders	Hyperkinetic movement disorders
Rigidity Akinesia (lack of movement) Hypokinesia (reduced amplitude of movements) Bradykinesia (slow movement), and rigidity.	Tremor (Rest, postural, action) Dystonia (Focal, segmental, generalized) Chorea and ballism Myoclonus Tics / Tic disorders

In primary movement disorders, the abnormal movement is the primary manifestation of the disorder. In secondary movement disorders, the abnormal movement is a manifestation of another systemic or neurological disorder. Treatment depends upon the underlying disorder.