Related Experiment Video
Updated: Apr 19, 2026

07:35
Behavioral Characterization of Pentylenetetrazole-induced Seizures: Moving Beyond the Racine Scale
Published on: July 8, 2025
1.9K
Clozapine-induced rabbit syndrome: a case report
1Department of Psychiatry, Faculty of Medicine, Rize University , Rize, Turkey.
Mental Illness
|December 6, 2014
Summary
Rabbit syndrome (RS) involves rhythmic mouth movements caused by antipsychotics. This case highlights the risk of RS with clozapine, an atypical antipsychotic, in a patient with schizophrenia.
Area of Science:
- Neurology
- Psychiatry
- Pharmacology
Background:
- Rabbit syndrome (RS) is an antipsychotic-induced movement disorder.
- Typically associated with older typical antipsychotics.
- Risk with newer atypical antipsychotics is less understood.
Observation:
- A 44-year-old female patient with paranoid schizophrenia for 22 years.
- Developed RS during a 10-month treatment with clozapine.
- Characterized by vertical mouth/lip movements at 5 Hz, without tongue involvement.
Findings:
- This case adds to isolated reports of RS with atypical antipsychotics.
- Suggests clozapine may pose a risk for developing RS.
- Further research is needed to quantify the risk of RS with atypical agents.
Implications:
- Clinicians should be aware of the potential for RS with clozapine.
- Monitoring for movement disorders is crucial in patients on atypical antipsychotics.
- Understanding atypical antipsychotic-induced movement disorders informs safer prescribing practices.
Related Concept Videos
Psychosis: Goals of Pharmacotherapy
693
Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation.
693
Antipsychotic Drugs: Therapeutic Uses and Side Effects
1.2K
Antipsychotic drugs primarily block dopamine and serotonin receptors and cholinergic, adrenergic, and histaminergic receptors, thereby reducing hallucinations and delusions in conditions like schizophrenia. However, they can trigger unwanted extrapyramidal effects such as dystonias, Parkinson-like symptoms, and tardive dyskinesia.
Despite these side effects, antipsychotics are used therapeutically for various purposes, including managing schizophrenia, preventing nausea and vomiting, curbing...
Despite these side effects, antipsychotics are used therapeutically for various purposes, including managing schizophrenia, preventing nausea and vomiting, curbing...
1.2K
Antipsychotic Drugs: Typical and Atypical Agents
1.3K
Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
1.3K
Antiepileptic Drugs: Potassium Channel Activators
1.0K
Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
Ezogabine has gained approval as an adjunctive treatment...
1.0K

