The relationship between psychological conditions and recurrence of benign paroxysmal positional vertigo: a retrospective cohort study.

ABSTRACT

BACKGROUND: Psychological conditions have been found to be associated with an increased risk of incident benign paroxysmal positional vertigo (BPPV). However, much less is known on whether and how psychological conditions such as anxiety, insomnia and obsessive-compulsive disorder (OCD) affect the recurrence of BPPV. METHODS: A retrospective cohort study of 2,612 outpatients and inpatients diagnosed with BPPV between September 2012 and August 2020. BPPV recurrence was followed up until February 2021. The Cox proportional hazard regression was used to analyze the association between psychological conditions and the risk of the first recurrence. Poisson regression was applied to analyze the association between psychological conditions and the number of recurrences in patients with at least one relapse. RESULTS: During the follow-up, 391 patients had at least one BPPV recurrence. Female BPPV patients were more likely than male patients to experience relapses than male patients, but the characteristics of BPPV recurrence (number of recurrences and duration between recurrences) did not differ between men and women. After adjustment for sex, age and comorbidities, a heightened risk of first BPPV recurrence was found to be associated with anxiety (hazard ratio [HR] 1.30, 95% confidence interval [CI] 1.01, 1.68) and OCD (HR 2.15, 95% CI 1.31, 3.52). An increased risk of first BPPV recurrence associated with insomnia was only observed in male patients (HR 2.22, 95% CI 1.24, 3.98) but not in female patients (HR 0.91, 95% CI 0.63, 1.31). None of these psychological conditions were associated with the number of recurrences in patients who experienced recurrence. CONCLUSIONS: The presence of anxiety and OCD increased the risk of first BPPV recurrence, as well as insomnia for male patients. These psychological conditions were not associated with the number of BPPV recurrences. Diagnosis and treatment of these psychological conditions could be a useful strategy to prevent the recurrence of BPPV.