Extrapyramidal symptoms (EPS), also known as extrapyramidal side effects (EPSE) is drug-induced movement disorders, which include acute and long-term symptoms. These symptoms include dystonia (continuous spasms and muscle contractions), akathisia (may manifest as motor restlessness), parkinsonism characteristic symptoms such as rigidity, bradykinesia (slowness of movement), tremor, and tardive dyskinesia (irregular, jerky movements). [Source: Wikipedia 
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