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Olanzapine-induced electroencephalographic changes reversed by lamotrigine
Prasuna L Velur1, Giridhar P Kalamangalam
1Deparment of Neurology, UT Health Science Center at Houston, Houston, TX, USA.
Annals of Indian Academy of Neurology
|January 26, 2013
Summary
Lamotrigine (LTG) withdrawal and reintroduction significantly impacted olanzapine-induced (OLZ) electroencephalographic (EEG) abnormalities in a young patient. LTG may normalize neuroleptic-induced EEG changes, suggesting a novel therapeutic role.
Area of Science:
- Neuroscience
- Clinical Neurology
- Pharmacology
Background:
- Atypical neuroleptics like olanzapine (OLZ) can cause electroencephalographic (EEG) abnormalities.
- Lamotrigine (LTG), an anticonvulsant, is known to reduce epileptiform discharges and treat epilepsy.
Observation:
- A case study involving a 13-year-old male with paroxysmal nonepileptic spells.
- Diagnostic video-EEG telemetry revealed abnormal OLZ-induced EEG findings.
- These EEG abnormalities were notably altered by the withdrawal and reintroduction of LTG.
Findings:
- The study observed a significant effect of lamotrigine (LTG) on neuroleptic-induced EEG abnormalities.
- LTG withdrawal exacerbated OLZ-induced EEG changes, while reintroduction appeared to normalize them.
- This suggests a potential role for LTG in managing specific neuroleptic-associated EEG disturbances.
Implications:
- Lamotrigine (LTG) may be a potential therapeutic agent for normalizing electroencephalographic (EEG) abnormalities induced by atypical neuroleptics like olanzapine (OLZ).
- This finding warrants further investigation into the interaction between anticonvulsants and neuroleptics on EEG activity.
- The results could inform treatment strategies for patients experiencing both epilepsy and psychiatric conditions requiring neuroleptic medication.
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