Nevreste Didem SONBAY YILMAZ, Nuray ENSARİ, Özer Erdem GÜR

Seasonal distribution of sudden sensori̇neural hearing loss

Sudden Sensorineural Hearing Loss (SSHL) is sensorineural hearing loss that occurs in 3 days or less, characterized by 30 dBHL or more, over at least 3 contiguous audiometric frequencies. In this study, we aimed to evaluate the SSHL incidence and its relationship with the seasons retrospectively by examining the patients diagnosed with SSHL in our clinic in the last 10 years. In our study, the files of 1920 patients diagnosed with SSHL in our hospital between January 2000 and December 2019 were analyzed retrospectively. The patients were evaluated separately according to age groups, gender, sudden hearing loss, months and seasons. SSHL was most common in January and October, but this difference was not statistically significant compared to other months (p>0.05). When the distribution according to the seasons was examined, it was observed that 28% of patients were in winter, 24% in spring, 26% in autumn and 22% in summer. The difference between seasons was not statistically significant (p>0.05). In October, the first month of the autumn season, and January, the first month of the winter season, we can attribute the high rate of SSHL to seasonal transitions. However, a more detailed study is required in this regard. A more precise result could be achieved with data on annual temperature transitions, humidity status and frequency of viral infections, which can only give us a preliminary information.

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1. Lin HC, Lee HC, Chao PZ et al. The effects of weather on the incidence of sudden sensorineural hearing loss: a 5-year population-based study. Audiol Neurootol. 2006;11:165-71.

2. Bulgurcu S, Sahin B, Akgül G et al. The effects of prognostic factors in idiopathic sudden hearing loss. Int Arch Otorhinolaryngol. 2018;22:33–7.

3. Jourdy DN, Donatelli LA, Victor JD et al. Assessment of variation throughout the year in the incidence of idiopathic sudden sensorineural hearing loss. Otol Neurotol. 2010;31:53-7.

4. Xie Y, Orabi NA, Zwolan TA. Outcomes of unilateral idiopathic sudden sensorineural hearing loss: Two decades of experience. Laryngoscope Investig Otolaryngol. 2019;4:693–702.

5. Lee HS, Lee YJ, Kang BS et al. A clinical analysis of sudden sensorineural hearing loss cases. Korean J Audiol. 2014;18:69-75.

6. Wu CS, Lin HC, Chao PZ. Sudden sensorineural hearing loss: evidence from Taiwan. Audiol Neurootol. 2006;11:151-6.

7. Seo JH, Jeon EJ, Park YS et al. Meteorological conditions related to the onset of idiopathic sudden sensorineural hearing loss. Yonsei Med J. 2014;55: 1678–82.

8. Ryu IY, Park SH, Park EB et al. Factors prognostic of season-associated sudden sensorineural hearing loss: a retrospective observational study. J Audiol Otol. 2017;21:44–8.

9. Lin RJ, Krall J, Westerberg, BD et al. Systematic review and meta-analysis of the risk factors for sudden sensorineural hearing loss in adults. Laryngoscope, 2012;122:624–35.

10. Chang NC, Ho KY, Kuo WR. Audiometric patterns and prognosis in sudden sensorineural hearing loss in southern Taiwan. Otolaryngol Head Neck Surg. 2005;133:916-22.

11. Danielides V, Nousia CS, Bartzokas A et al. Weather conditions and sudden sensorineural hearing loss. BMC Ear Nose Throat Disord. 2002;2:2.

12. Yılmaz NDS, Gur OE, Kucuktepe U et al. Seasonal distribution of the incidence of bell’s palsy. Med Sci. 2019;8:750-3.