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Olanzapine and obsessive-compulsive symptoms.

L Lykouras1, I M Zervas, R Gournellis

  • 1Department of Psychiatry, Athens University Medical School, Eginition Hospital, 74 Vass. Sophias Avenue, 115 28, Athens, Greece. gnchrist@compulink.gr

European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology
|September 7, 2000
PubMed
Summary

Olanzapine may worsen obsessive-compulsive symptoms in patients with schizophrenia or obsessive-compulsive disorder. This atypical antipsychotic can exacerbate existing symptoms or trigger new ones.

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Area of Science:

  • Psychiatry
  • Neuroscience
  • Pharmacology

Background:

  • Atypical antipsychotics like clozapine and risperidone are known to potentially induce or worsen obsessive-compulsive symptoms.
  • Understanding the full spectrum of side effects for second-generation antipsychotics is crucial for patient management.

Observation:

  • This study details three clinical cases where olanzapine administration led to a notable increase in obsessive-compulsive symptoms.
  • Two cases involved patients diagnosed with schizophrenia, and one case involved a patient with primary obsessive-compulsive disorder.

Findings:

  • Olanzapine, another atypical antipsychotic, was associated with significant exacerbation of obsessive-compulsive symptoms.
  • The observed effect occurred in both schizophrenia patients and a patient with obsessive-compulsive disorder, suggesting a broader impact.

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Implications:

  • Clinicians should carefully monitor patients for emergent or worsening obsessive-compulsive symptoms when initiating or adjusting olanzapine treatment.
  • Further research is warranted to elucidate the specific mechanisms by which olanzapine influences obsessive-compulsive symptomatology.