title: A past psychiatric history may be a risk factor for topiramate-related psychiatric and cognitive adverse events.
abstract: OBJECTIVE
  Topiramate (TPM) is a new antiepileptic drug (AED) that has been found to be associated with a high prevalence of cognitive adverse events (CAEs). The prevalence of psychiatric adverse events (PAEs) has yet to be established. The purpose of this study was to determine the prevalence of PAEs related to TPM when used in polytherapy regimens in a large cohort of adult patients with epilepsy, to identify any association between the occurrences of CAEs and PAEs and to identify predictors of PAEs and CAEs.
  
  
  METHODS
  Investigators from 16 epilepsy centers (PADS group) prospectively obtained postmarketing safety and efficacy data on 596 patients aged 16 years and older. All data were recorded on standardized data retrieval forms, completed at the initial visit, while follow-up data were obtained every 6 months or at the time of discontinuation.
  
  
  RESULTS
  PAEs were identified in 75 (12.6%) patients: 30 (5%) experienced symptoms of depression and 34 (5.7%) of aggressive behavior and irritability, while 9 patients experienced symptoms of psychosis (1.5%). CAEs were reported by 247 (41.5%) patients. There was a significant association between the occurrences of CAEs and PAEs. A past psychiatric history was a predictor of CAEs, while older age and past psychiatric history were predictors of PAEs.
  
  
  CONCLUSIONS
  The use of TPM in polytherapy regimens can cause PAEs and CAEs and their occurrence is significantly correlated. Patients with a past psychiatric history may be at a higher risk for experiencing PAEs and CAEs.
authors.affiliation: Department of Neurological Sciences, Rush-Presbyterian St. Luke's Medical Center, Rush Medical College, 1653 West Congress Parkway, Chicago, IL 60612, USA. akanner@rush.edu
authors.forename: Andres M
authors.initials: AM
authors.lastname: Kanner
authors.forename: Joanne
authors.initials: J
authors.lastname: Wuu
authors.forename: Edward
authors.initials: E
authors.lastname: Faught
authors.forename: William O
authors.initials: WO
authors.lastname: Tatum
authors.forename: Aaron
authors.initials: A
authors.lastname: Fix
authors.forename: Jacqueline A
authors.initials: JA
authors.lastname: French
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000927:Anticonvulsants / Q000009:adverse effects*; D003072:Cognition Disorders / Q000139:chemically induced* / Q000523:psychology*; D004827:Epilepsy / Q000150:complications* / Q000188:drug therapy / Q000523:psychology*; D005260:Female; D005632:Fructose / Q000009:adverse effects* / Q000031:analogs & derivatives*; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000150:complications* / Q000523:psychology; D008875:Middle Aged; D011446:Prospective Studies; D012307:Risk Factors; D000077236:Topiramate
chemical_list: D000927:Anticonvulsants; D000077236:Topiramate; D005632:Fructose