Pediatric movement disorders

Movement disorders in children encompass disorders of motor control-both hy perkinetic (excessive movement) and hypokinetic (decreased movement). This article focuses on the hyperkinetic movement disorders, particularly tremor , Wilson's disease, dystonia, ties and Tourette syndrome, chorea, myoclonus , neuroleptic-induced movement disorders, and psychogenic movement disorder s. Phenomenology of the disorders as well as clinical presentation, basic p athophysiology, genetics, and treatment are discussed.