Patients with VBI appear to be at increased risk of developing SSNHL. Further research is needed to investigate the association among the severity of VBI, the risk of SSNHL, and the pattern of the audiometric curve.

BackgroundThere is still controversy regarding the association between primary headaches and obstructive sleep apnea. We explored the relationship between tension-type headache (TTH) and obstructive sleep apnea (OSA) using a large nationwide population-based data set in Taiwan.MethodsWe identified 4759 patients diagnosed with OSA from the Taiwan Longitudinal Health Insurance Database, based on polysomnography, as the OSA group. We then randomly selected 19036 subjects without OSA, matched by sex and age, to serve as the non-OSA group. The multivariate Cox proportional hazards model with matching for age and sex was used to assess the possible associations between TTH and OSA among the patients.ResultsThe prevalence of TTH was 10.2% among OSA patients and 7.7% among non-OSA patients (p < 0.001). The multivariate Cox proportional hazards model revealed patients with OSA were more likely to have TTH (hazard ratio, 1.18; 95% CI, 1.06–1.31) (p = 0.003) than patients in the non-OSA group.ConclusionPatients with OSA had a higher likelihood of developing TTH than patients in the non-OSA group. Further studies of physiological patterns between OSA and TTH are needed to confirm the study findings.