Extrapyramidal symptoms (EPS), also known as extrapyramidal side effects (EPSE), are drug-induced movement disorders that include acute and tardive symptoms. These symptoms include dystonia (continuous spasms and muscle contractions), akathisia (motor restlessness), parkinsonism (characteristic symptoms such as rigidity, bradykinesia (slowness of movement), and tremor), and tardive dyskinesia (irregular, jerky movements). Antipsychotics are often discontinued due to inefficacy and intolerable side effects such as extrapyramidal symptoms.