Worsening of motor features of parkinsonism with olanzapine.
Identifieur interne : 007677 ( Main/Merge ); précédent : 007676; suivant : 007678Worsening of motor features of parkinsonism with olanzapine.
Auteurs : E S Molho [États-Unis] ; S A FactorSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 1999.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Antiparkinson Agents (administration & dosage), Antiparkinson Agents (adverse effects), Antipsychotic Agents (administration & dosage), Antipsychotic Agents (adverse effects), Benzodiazepines, Female, Humans, Levodopa (administration & dosage), Levodopa (adverse effects), Male, Middle Aged, Motor Skills (drug effects), Neurologic Examination (drug effects), Parkinson Disease (diagnosis), Parkinson Disease (drug therapy), Parkinson Disease, Secondary (chemically induced), Parkinson Disease, Secondary (diagnosis), Pirenzepine (administration & dosage), Pirenzepine (adverse effects), Pirenzepine (analogs & derivatives), Psychoses, Substance-Induced (diagnosis), Psychoses, Substance-Induced (drug therapy), Risk Factors.
- MESH :
- chemical , administration & dosage : Antiparkinson Agents, Antipsychotic Agents, Levodopa, Pirenzepine.
- chemical , adverse effects : Antiparkinson Agents, Antipsychotic Agents, Levodopa, Pirenzepine.
- chemical , analogs & derivatives : Pirenzepine.
- chemically induced : Parkinson Disease, Secondary.
- diagnosis : Parkinson Disease, Parkinson Disease, Secondary, Psychoses, Substance-Induced.
- drug effects : Motor Skills, Neurologic Examination.
- drug therapy : Parkinson Disease, Psychoses, Substance-Induced.
- Aged, Aged, 80 and over, Benzodiazepines, Female, Humans, Male, Middle Aged, Risk Factors.
Abstract
Clozapine is the current treatment of choice for drug-induced psychosis (DIP) occurring in Parkinson's disease. However, alternative medications have been sought because of the small but significant risk of agranulocytosis and the need for frequent blood testing. The new "atypical" antipsychotic olanzapine (OLZ) has recently been proposed as a safe and effective option for treating psychosis in this setting. To investigate this, we retrospectively evaluated all 12 of our patients treated with OLZ for DIP. Symptoms of psychosis were improved in nine of 12 patients, but nine of 12 patients also experienced worsening of motor functioning while on OLZ. The worsening was considered dramatic in six of these patients. Overall, there was no significant increase in levodopa doses on OLZ. Only one patient remained on OLZ at the time of the analysis. Nine patients were switched to alternative treatment for DIP. We conclude that although OLZ may improve symptoms of psychosis in parkinsonian patients, it can also worsen motor functioning. In some patients, the degree of motor worsening may be intolerable.
PubMed: 10584679
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<affiliation wicri:level="2"><nlm:affiliation>Department of Neurology, Albany Medical College, New York, USA.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Neurology, Albany Medical College, New York</wicri:regionArea>
<placeName><region type="state">État de New York</region>
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<term>Antiparkinson Agents (adverse effects)</term>
<term>Antipsychotic Agents (administration & dosage)</term>
<term>Antipsychotic Agents (adverse effects)</term>
<term>Benzodiazepines</term>
<term>Female</term>
<term>Humans</term>
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<term>Levodopa (adverse effects)</term>
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<term>Pirenzepine (analogs & derivatives)</term>
<term>Psychoses, Substance-Induced (diagnosis)</term>
<term>Psychoses, Substance-Induced (drug therapy)</term>
<term>Risk Factors</term>
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<term>Antipsychotic Agents</term>
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<term>Antipsychotic Agents</term>
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<term>Parkinson Disease, Secondary</term>
<term>Psychoses, Substance-Induced</term>
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<term>Neurologic Examination</term>
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<term>Psychoses, Substance-Induced</term>
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<front><div type="abstract" xml:lang="en">Clozapine is the current treatment of choice for drug-induced psychosis (DIP) occurring in Parkinson's disease. However, alternative medications have been sought because of the small but significant risk of agranulocytosis and the need for frequent blood testing. The new "atypical" antipsychotic olanzapine (OLZ) has recently been proposed as a safe and effective option for treating psychosis in this setting. To investigate this, we retrospectively evaluated all 12 of our patients treated with OLZ for DIP. Symptoms of psychosis were improved in nine of 12 patients, but nine of 12 patients also experienced worsening of motor functioning while on OLZ. The worsening was considered dramatic in six of these patients. Overall, there was no significant increase in levodopa doses on OLZ. Only one patient remained on OLZ at the time of the analysis. Nine patients were switched to alternative treatment for DIP. We conclude that although OLZ may improve symptoms of psychosis in parkinsonian patients, it can also worsen motor functioning. In some patients, the degree of motor worsening may be intolerable.</div>
</front>
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