Neuroanaesthesia & neurocritical care

Epilepsy After Antipsychotic Prescription in Survivors of Traumatic Brain Injury: A Population-Based Cohort Study

Crit Care MedPublished Retrospective cohort study

Authors' conclusion

We found no clear signal of a differential risk of epilepsy when comparing new prescriptions for haloperidol or risperidone with quetiapine among survivors of TBI.

Study context

Population
Adults ≥66 years without epilepsy who survived a first traumatic brain injury (TBI) admission and filled new antipsychotic prescriptions within 30 days after discharge; Ontario, Canada (2009–2021)
Participants
1,204 adults
Exposure
Haloperidol or risperidone, each vs quetiapine, new prescription after TBI hospitalisation
  • Haloperidoln = 202
  • Risperidonen = 300
  • Quetiapinen = 702reference
Outcome
New diagnosis of epilepsy
Follow-up
Up to 5 years following discharge
Methodological detailspopulation-based, inverse probability of treatment weighting
  • Population-based
  • Inverse probability of treatment weighting

Main finding

As reported in the abstract

up to 5 years
Each group vs quetiapineAdjusted hazard ratio (95% CI)
Haloperidol
0.73(0.39–1.34)
Risperidone
0.94(0.65–1.36)

Observational data: associations, not effects.

Further findings

Mortality · 5 years of follow-up

Original publication

Epilepsy After Antipsychotic Prescription in Survivors of Traumatic Brain Injury: A Population-Based Cohort Study. Crit Care Med. Published 21 September 2026. doi:10.1097/ccm.0000000000007335

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