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Ocular and auditory abnormalities in patients with vitiligo: a case-control study
1Department of Dermatology and Venereology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
Background:
Vitiligo is characterized by the destruction of functional melanocytes in the skin. This destruction can target melanocytes anywhere in the body, in turn affecting the function of the organs in which the affected melanocytes reside. Melanocytes in the skin, uveal tract and ear are similar in their physiology and morphology, and share a common embryological origin.
Aim:
To study the association of vitiligo with ocular and auditory abnormalities.
Methods:
This case-control study was carried out on 40 patients with vitiligo and 20 healthy controls (HCs). All patients and HCs underwent auditory examination (otoscopic examination and immittance audiometry to assess middle ear pressure and exclude tympanic membrane perforation; pure tone audiometry to assess peripheral hearing sensitivity; and transient evoked otoacoustic emissions to assess central hearing ability) and standard ocular examination including visual acuity test, slit lamp biomicroscopy and optical coherence tomography.
Results:
Compared with controls, there was a significantly higher prevalence of hearing loss and ocular abnormalities in patients with vitiligo but no significant difference in visual acuity.
Conclusion:
Vitiligo is a systemic disease that can be associated with impairment of melanocyte function organs other than the skin, including the eyes and ears. The function of auditory melanocytes is related to the hearing process and thus their destruction could lead to hearing impairment. By contrast, ocular melanocytes do not play a direct role in detection or transfer of visual information, and thus should not affect vision. Vitiligo may be associated with ocular abnormalities and hearing loss.
Insights
Vitiligo, a condition affecting melanocytes, is linked to higher rates of hearing loss and ocular abnormalities. This systemic disease impacts organs beyond the skin, potentially affecting vision and hearing.
Area of Science:
- Dermatology
- Ophthalmology
- Audiology
Background:
- Vitiligo involves melanocyte destruction, affecting skin and other organs.
- Melanocytes in skin, eyes, and ears share origins and physiology.
- This study investigates vitiligo's link to eye and ear issues.
Purpose of the Study:
- To examine the association between vitiligo and ocular and auditory abnormalities.
- To understand the systemic effects of vitiligo on sensory organs.
Main Methods:
- A case-control study included 40 vitiligo patients and 20 healthy controls.
- Auditory assessments included otoscopy, immittance audiometry, pure tone audiometry, and otoacoustic emissions.
- Ocular examinations involved visual acuity tests, slit lamp biomicroscopy, and optical coherence tomography.
Main Results:
- Patients with vitiligo showed a significantly higher prevalence of hearing loss compared to controls.
- Ocular abnormalities were also more common in vitiligo patients.
- No significant difference in visual acuity was observed between groups.
Conclusions:
- Vitiligo is a systemic disease affecting melanocyte function in organs like eyes and ears.
- Melanocyte loss in the ear can lead to hearing impairment.
- While ocular melanocytes aren't crucial for vision, vitiligo is associated with ocular abnormalities and hearing loss.
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