A study on association between thyroid disorders and sensorineural hearing loss

Ponrajkumar Nedunchezhian; Gowri Shankar Murugesan; Suresh Vadivel; Vivek Mariappan

doi:10.18203/issn.2454-5929.ijohns20193876

Authors

Ponrajkumar Nedunchezhian Department of ENT, Government Medical College, Omandurar Government Estate, Chennai, Tamil Nadu, India
Gowri Shankar Murugesan Department of ENT, Stanley Medical College, Chennai, Tamil Nadu, India
Suresh Vadivel Department of ENT, Stanley Medical College, Chennai, Tamil Nadu, India
Vivek Mariappan Department of ENT, Upgraded Institute of Otorhinolaryngology, Madras Medical College, Chennai, Tamil Nadu, India

DOI:

https://doi.org/10.18203/issn.2454-5929.ijohns20193876

Keywords:

Pure tone audiometry, Sensorineural hearing loss, Conductive hearing loss, Hypothyroidism, Hyperthyroidism, Thyroid receptors

Abstract

Background: Thyroid hormones are important for overall growth and maturation. They play a significant role in the development of cochlea. Hearing loss is commonly seen in thyroid disorders. This study attempts at understanding the association between thyroid disorders and sensorineural hearing loss.

Methods: 106 subjects with thyroid disorders were evaluated for hearing loss. They were classified according to their thyroid status and pure tone audiometry was done. The cases were compared with age and sex matched controls.

Results: SNHL was the common type of hearing loss seen. The prevalence of SNHL found to be 32.1% in cases. SNHL is bilateral and commonly high frequency type in the early stage of the disease. The severity and prevalence of hearing loss is more with longer duration of the disease state. 29.4% of the cases showed improvement in hearing with therapy for three months.

Conclusions: In patients with thyroid disorders, hearing evaluation helps in the detection of hearing loss earlier and thus treatment could be started.

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