Journal
EXPERT OPINION ON PHARMACOTHERAPY
Volume 9, Issue 9, Pages 1451-1462Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1517/14656566.9.9.1451
Keywords
akathisia; amantadine; anticholinergic; antipsychotic; basal ganglia; clozapine; dopamine; dyskinesia; dystonia; extrapyramidal; haloperidol; movement disorder; neuroleptic; parkinsonism; prevention; propranolol; psychosis; quetiapine; receptor; schizophrenia; side effects; tardive; tetrabenazine; treatment; vitamin E
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Background: Antipsychotic drugs have revolutionized the management of psychosis. Unfortunately, these drugs may cause a variety of distressing acute and delayed movement disorders, collectively known as 'extrapyramidal symptoms' (EPS). Objective: This review summarizes the current knowledge of the phenomenology, epidemiology, and pathophysiology of EPS, while highlighting their prevention and management. Methods: The review is limited to movement disorders resulting from typical and atypical antipsychotics. Recent and higher-quality evidence is emphasized. Conclusion: The pathophysiology of these disorders is still unclear. The use of atypical antipsychotics may have reduced EPS but has far from eliminated them. Available treatment options are often disappointing, especially for akathisia and the tardive syndromes. Future work will identify better treatments for these symptoms, as well as new antipsychotic agents that do not cause EPS.
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