"Tardive syndrome" is an umbrella term for a group of drug-induced movement disorders associated with the prolonged use of mainly dopamine receptor blockers and also other medications. Early recognition followed by gradual withdrawal of the incriminating drug may lead to reversal, although not in all patients. Tardive syndromes are usually mixed movement disorders, with specific phenotypes, which may lead to severe disability. The pathophysiology remains incompletely understood. Treatment ranges from medical options, particularly dopamine-depleting agents and chemodenervation (botulinum toxin), to surgical options (deep brain stimulation and lesioning surgeries). Most studies that focused on treatment are limited by small patient numbers. Unfortunately, tardive syndromes often remain under-recognized in clinical practice. This article reviews the historical aspects, epidemiology and risk factors, pathophysiology, diagnostic criteria, clinical phenotypes, and management of tardive syndromes.
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http://dx.doi.org/10.4103/aian.aian_657_24 | DOI Listing |
Ann Indian Acad Neurol
January 2025
Department of Neurology, All India Institute of Medical Sciences, New Delhi, India.
"Tardive syndrome" is an umbrella term for a group of drug-induced movement disorders associated with the prolonged use of mainly dopamine receptor blockers and also other medications. Early recognition followed by gradual withdrawal of the incriminating drug may lead to reversal, although not in all patients. Tardive syndromes are usually mixed movement disorders, with specific phenotypes, which may lead to severe disability.
View Article and Find Full Text PDFTremor Other Hyperkinet Mov (N Y)
January 2025
Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
Background: Despite efforts to visualize all the movements of tongue and oropharynx in individuals with focal movement disorders (specifically tardive dyskinesia (TD)), clinicians can miss the complete picture and additional tools may be required to reach an accurate diagnosis.
Cases: We present three cases with TD where ultrasound assisted in diagnoses. These individuals had difficulty swallowing and abnormal sensations in the tongue, which remained undiagnosed until we performed ultrasound of oropharynx which allowed for characterization of these movements.
Indian J Psychiatry
November 2024
Department of Neurology, Institute of Neurosciences Kolkata, West Bengal, India.
Clin Nucl Med
February 2025
From the Department of Nuclear Medicine and PET-Centre, Aarhus University Hospital, Aarhus, Denmark.
We present a case of a 66-year-old man, where 18F-FDG PET/CT revealed intense FDG uptake in the tongue, lips, cheeks, and chewing musculature and distinct activation of the somatosensory and motor cortex corresponding to the mouth and tongue. The patient suffered from buccolingual masticatory syndrome, characterized by tardive dyskinesia, meaning uncontrollable, repetitive movements of the tongue, lips, cheeks, and masticatory musculature. In this case, the buccolingual masticatory syndrome was caused by metoclopramide antiemetic treatment.
View Article and Find Full Text PDFNeurotox Res
December 2024
Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Chronic use of typical antipsychotics can lead to varying motor effects depending on the timing of analysis. Acute treatment typically induces hypokinesia, resembling parkinsonism, while repeated use can result in tardive dyskinesia, a hyperkinetic syndrome marked by involuntary orofacial movements, such as vacuous chewing movements in mice. Tardive dyskinesia is particularly concerning due to its potential irreversibility and associated motor discomfort.
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