Prevalence of Cognitive Impairment in Patients with Chronic Migraine: A Cross-Sectional Study
DOI:
https://doi.org/10.69980/ajpr.v28i5.427Keywords:
.Abstract
Background: Cognitive impairment is increasingly recognized as a comorbid feature of chronic migraine (CM), affecting various cognitive domains such as attention, memory, and executive function. However, its prevalence and contributing factors remain unclear. This study aimed to assess cognitive impairment in CM patients compared to those with low-frequency episodic migraine (EM) and investigate potential associations with clinical and psychological variables.
Methods: A cross-sectional study was conducted involving 120 CM patients and 40 age-matched EM patients. Participants underwent standardized cognitive assessments, including the Montreal Cognitive Assessment (MoCA), Digit Symbol Substitution Test (DSST), Perceived Deficits Questionnaire (PDQ-20), and Rey Auditory Verbal Learning Test (RAVLT). Depression and anxiety levels were evaluated using the Hospital Anxiety and Depression Scale (HADS). Statistical analyses were performed to compare cognitive performance between groups and identify correlations between cognitive impairment, clinical characteristics, and psychological factors.
Results: CM patients exhibited significantly lower cognitive scores across all measures compared to EM patients (p < 0.001). MoCA and DSST results indicated deficits in executive function, attention, and processing speed, while RAVLT and PDQ-20 scores revealed impairments in memory and subjective cognitive complaints. Cognitive dysfunction was negatively correlated with headache frequency, depression, and anxiety scores (p < 0.001). Regression analysis identified headache frequency and chronic pain duration as independent predictors of cognitive impairment, whereas depression and anxiety were not significant contributors.
Conclusion: Cognitive impairment is prevalent in CM patients, affecting multiple domains and persisting even in pain-free intervals. Chronic pain and headache frequency appear to be primary contributors to cognitive decline rather than psychiatric comorbidities. These findings highlight the need for early migraine management strategies to prevent long-term cognitive deterioration. Future studies should explore longitudinal changes and potential interventions to mitigate cognitive decline in CM patients.
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