Related Experiment Video
Updated: Jul 25, 2025

The Mouse Round-window Approach for Ototoxic Agent Delivery: A Rapid and Reliable Technique for Inducing Cochlear Cell Degeneration
Published on: November 26, 2015
A rare case of abnormal epithelial migration in the external auditory canal secondary to cotton bud abuse
Tika Ram Adhikari1, Sonam Jamtsho1
1Department of ENT, Jigme Dorji Wangchuk National Referral Hospital, Thimphu, Bhutan.
Abstract:
The outer third of external auditory canal is cartilaginous and contains pilosebaceous glands and hair follicles. The medial two third is bony, and the skin is devoid of these skin appendages and its secretions. It also has outward migratory property which makes the ear self-cleansing. Here we present an exceeding rare case of hair in the tympanic membrane causing distressing symptom of scratchy sensation, tinnitus, and otalgia. We hypothesize, it is the distortion of migratory pattern medially due to repeated otitis externa caused by abuse of cotton bud that led to presence of hair in the tympanic membrane.
Related Concept Videos
Anatomy of the Ear
Auditory Pathway
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...

