Background: Epilepsy is associated with significant psychiatric and cognitive comorbidities. This cross-sectional study evaluates the prevalence of cognitive impairment (CI) and psychiatric disorders in 100 individuals with epilepsy (PWE) attending a tertiary neurology clinic in India. Methods: Cognitive function was assessed using the Montreal Cognitive Assessment (MoCA) and Addenbrooke’s Cognitive Examination-III (ACE-III). Psychiatric morbidity was evaluated using the Mini-International Neuropsychiatric Interview (MINI). Results: CI was identified in 66% (MoCA <26) and 90% (ACE-III <83) of participants. Psychiatric comorbidities were present in 17%, with major depressive disorder (64.7%) and social anxiety disorder (35.3%) being most prevalent. CI correlated with lower education (p<0.001), unemployment (p=0.001), polytherapy (p=0.03), and longer epilepsy duration (p<0.001). No significant association was found between CI and psychiatric morbidity (p=0.12). Conclusion: High rates of CI and psychiatric disorders highlight the need for routine screening and multidisciplinary care in epilepsy management.
Epilepsy affects over 50 million people globally, with 6–8 million cases in India1. Beyond seizures, PWE face cognitive deficits and psychiatric disorders, contributing to poor quality of life (QOL). CI in epilepsy arises from factors like seizure frequency, anti-epileptic drugs (AEDs), and disease duration. Psychiatric comorbidities, particularly depression and anxiety, occur in 20–50% of PWE. Despite their prevalence, these comorbidities often remain undiagnosed. This study evaluates cognitive performance, psychiatric morbidity, and their interplay in PWE.
Study Design and Participants
A cross-sectional study of 100 PWE (aged 18–55 years) was conducted at Osmania General Hospital, Hyderabad, India. Exclusion criteria included intellectual disability, substance use, and neurological comorbidities.
Ethical Approval: Obtained from Osmania Medical College (IRB No. OMC/2020/45). Submitted: February 23, 2025
Conflicts of Interest: None declared.
Assessments
Statistical Analysis
Data were analyzed using SPSS v29. Chi-square tests assessed associations between variables (p<0.05 significant).
Sociodemographic and Clinical Characteristics
Table 1: Sociodemographic Profile (N=100)
Variable |
n (%) |
Age (Mean ± SD) |
31.6 ± 10.4 years |
Gender |
Male: 66 (66%), Female: 34 (34%) |
Education |
Primary: 20%, Graduation: 36% |
Employment |
Unemployed: 51% |
Table 2: Clinical Characteristics
Variable |
n (%) |
Epilepsy Duration |
>10 years: 39% |
Seizure Type |
Generalized Tonic-Clonic: 94% |
AED Polytherapy |
48% |
Cognitive Impairment
Table 3: Cognitive Performance (N=100)
Assessment |
Normal (%) |
Impaired (%) |
MoCA |
34 |
66 |
ACE-III |
10 |
90 |
Table 4: Psychiatric Comorbidities (N=17)
Disorder |
n (%) |
Major Depressive Disorder |
11 (64.7%) |
Social Anxiety Disorder |
6 (35.3%) |
Psychotic Disorders |
4 (23.5%) |
Associations
Cognitive Impairment
This study identified CI in 66–90% of PWE, aligning with global data. Low education and unemployment exacerbated CI, likely due to limited cognitive reserve and socioeconomic stress. Polytherapy’s role in CI underscores AED neurotoxicity risks.
Psychiatric Comorbidity
Depression dominated psychiatric comorbidities (64.7%), consistent with prior studies. Despite CI prevalence in psychiatric cases (82.4%), the lack of statistical significance suggests multifactorial etiology, including stigma and diagnostic limitations.
LIMITATIONS
Small sample size and reliance on cross-sectional data limit causal inferences. Future studies should include longitudinal designs and neuroimaging.
Cognitive and psychiatric comorbidities are pervasive in PWE, necessitating routine screening. Interventions should address modifiable factors (e.g., AED regimens, education access). Multidisciplinary care models integrating neurology and psychiatry are recommended.