The relationship between antiepileptic drug load and challenging behaviors in older adults with intellectual disability and epilepsy.

Antiepileptic drugs (AEDs) may affect mood and behavior in people with epilepsy and intellectual disability. A high AED load, derived from AED polytherapy and/or high doses of AEDs, has been suggested to be a risk factor for behavioral side effects. Data were drawn from Wave 3 of the Intellectual Disability Supplement to the Irish Longitudinal Study on Ageing (IDS-TILDA). The Behavior Problems Inventory Short Form (BPI-S) was used to assess challenging behaviors. AED load was calculated and median AED loads obtained. Non-parametric tests and binary logistic regression were performed to determine the relationship between AED load and challenging behaviors. Of participants with a reported diagnosis of epilepsy who were taking a regular AED and had completed BPI-S (n = 142), 62.7% (n = 89) exhibited challenging behaviors. Challenging behavior was found to be more prevalent in those with more severe levels of intellectual disability (p < 0.001). Aggressive/destructive behavior and stereotyped behavior were significantly more likely in participants living in residential/campus settings. For participants with a severe/profound intellectual disability, a significantly higher median AED load was found for participants exhibiting aggressive/destructive behavior and self-injurious behavior (SIB) compared to participants not exhibiting these behaviors, indicating a high AED load may contribute to some behavioral problems in this population group. However, many factors can influence behavioral outcomes, creating difficulties in determining those that are associated and the nature of the association. Careful monitoring of AED load, together with increased vigilance for breakthrough behavioral issues is essential for dealing with these complex cases. Larger studies are needed to account for the potential confounding factors.

Antiepileptic drugs, occurrence of seizures and effect of co-administration of potential seizure threshold-lowering psychotropic drugs in adults with intellectual disability who have epilepsy.

BACKGROUND: This study explored antiepileptic drug use, frequency of seizures, and the effect of psychotropic drugs with the potential to lower the seizure threshold in persons diagnosed with epilepsy and intellectual disability. METHODS: Data for this study were drawn from Wave 3 of the Intellectual Disability Supplement to the Irish Longitudinal Study on Ageing (IDS-TILDA). Psychotropic drugs were categorised for potential seizure threshold-lowering risk (low, moderate, high). Binary logistic regression was performed to identify factors associated with seizure frequency. RESULTS: Epilepsy prevalence was 35.8% (n = 196), of which 57.7% reported a mental health condition. Participants with seizure data classified as taking at least one moderate-/high-risk medication were significantly less likely to experience a seizure compared to participants taking no potential seizure threshold-lowering medication. CONCLUSIONS: Psychotropic drugs recommended to be avoided or used with caution did not provoke increased seizure frequency in this cohort.