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Related Experiment Video

Updated: Jul 10, 2026

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease

Published on: October 14, 2021

Rivastigmine-induced dystonia.

Clay J Pavlis¹, Eric C Kutscher, Ryan M Carnahan

¹Sanford School of Medicine, University of South Dakota (USD), Sioux Falls 57110, USA.

American Journal of Health-System Pharmacy : AJHP : Official Journal of the American Society of Health-System Pharmacists

|November 22, 2007

Summary

This summary is machine-generated.

Rivastigmine use may cause acute dystonia in patients with Alzheimer's disease and bipolar disorder. Discontinuation of rivastigmine led to symptom resolution, suggesting a causal link.

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Area of Science:

Neuroscience
Pharmacology
Psychiatry

Background:

Rivastigmine is a cholinesterase inhibitor used to treat dementia associated with Alzheimer's disease.
Patients with Alzheimer's disease often have comorbid psychiatric conditions, such as bipolar disorder.

Observation:

A 61-year-old woman with bipolar II disorder and Alzheimer's disease developed acute dystonia symptoms, including chest tightness and opisthotonos.
These symptoms emerged shortly after initiating rivastigmine and resolved upon its discontinuation.
The symptoms recurred upon rivastigmine reintroduction, further supporting a causal relationship.

Findings:

The case suggests a potential link between rivastigmine and acute dystonia in a patient with complex psychiatric comorbidities.
The patient was on multiple medications, which could potentially lower the threshold for extrapyramidal side effects.

Implications:

Clinicians should be vigilant for extrapyramidal symptoms, such as dystonia, in patients treated with rivastigmine, particularly those with psychiatric comorbidities.
Careful medication review and consideration of drug interactions are crucial in managing patients with dementia and comorbid conditions.