What causes mucoepidermal conflict relative to myringitis?

Updated: Oct 19, 2018
  • Author: John Schweinfurth, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Answer

Mucoepidermal conflict

  • If the speed of the epidermis displacement and that of the mucosal displacement are different, conflict, which is typical for chronic myringitis, develops.

  • When the redundant mucous membrane penetrates the perforation and extends over the edges of the dermis, growth of the epithelium ceases.

  • The maceration of the dermis and its tendency to grow into the injured tissue become the main sources of inflammation. Lacking the necessary support, the mucous membrane forms granulation tissue and polyps.

  • When redundant tissue has formed within the middle ear mucosa, the epidermis penetrates into the middle ear space through the edge of the perforated TM and expands there; it is exposed to desquamation, and cholesteatoma is formed.

  • All types of dermatitis of the external ear affect the TM, involving it in similar inflammation.


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