Neuropsychiatric Symptoms in Neurological Disorders and Their Relationship with Caregiver Burden: A Cross-Sectional Study
Background: Neuropsychiatric symptoms (NPS) such as irritability, agitation, sleep disturbances, delusions, and anxiety are common across neurological disorders and substantially affect patient outcomes. These symptoms contribute significantly to caregiver stress, particularly in India where family members serve as the primary caregivers with limited institutional support. Methods: This hospital-based, cross-sectional study was conducted at Indira Gandhi Medical College, Shimla, from June 2020 to May 2021. Eighty patient–caregiver dyads were recruited, including patients with dementia, seizure disorder, Parkinson’s disease, alcohol-induced amnestic syndrome, and cerebrovascular disease. All patients had at least one NPS. Cognitive functioning was assessed with the Addenbrooke’s Cognitive Examination–III (ACE-III), functional status with the Barthel Index, NPS with the Neuropsychiatric Inventory–Questionnaire (NPI-Q), and caregiver burden with the Zarit Burden Interview (ZBI). Data were analyzed using chi-square/Fisher’s exact test, ANOVA, and correlation analyses. Results: The mean age of patients was 61.1 ± 22.4 years, with 60% females. Dementia was the most common diagnosis (60%), followed by seizure disorder (28.8%). In dementia, the most frequent NPS were irritability (79.2%), sleep disturbances (72.9%), and delusions (50.0%). Caregiver burden was substantial, with 39.6% reporting mild-to-moderate burden and 35.4% moderate-to-severe burden. Longer illness duration (p=0.0217) and greater functional dependency (p=0.0147) were significantly associated with higher burden. In seizure disorder, irritability (69.6%), anxiety (60.9%), and depression (52.2%) were most common, with caregiver burden significantly associated only with dependency in activities of daily living (p=0.0102). Across all conditions, NPI-Q severity correlated strongly with caregiver distress, particularly for psychotic and disruptive symptoms (p<0.01). Conclusion: NPS are highly prevalent across neurological disorders and represent a major driver of caregiver burden, especially in dementia. Functional dependency and psychotic features were the strongest predictors of distress. Early recognition and targeted management of NPS, along with caregiver education and support, are essential to improve outcomes for both patients and their families.