Movement disorders due to toxicity

**Definition:** Movements of the body such as hyperkinesias, dyskinesias, myoclonus, chorea, tremor and tics produced by toxicity either by toxin or drug, e.g. toxicity by manganese, neuroleptic drugs, calcium channel blockers, gastrointestinal prokinetics, antiarrhythmics and antidepressants that may induce Parkinsonism.