Dysfunctional Eustachian Tube
Eustachian tubes are tiny tubes that are located between the upper throat and the middle ears. They play an important part in draining fluids and stabilizing ear pressure. When you yawn, swallow, or chew, these parts will open so that the air can come in and equalize pressure inside your year. Due to some reasons like allergies, cold, or sinus infections, eustachian tubes might not work properly. As a result, a partial vacuum cannot happen in the middle ear. This eventually causes a part of the eardrum to be pulled to the middle ear, which leads to cholesteatoma. Over time, the growth becomes larger when it is filled with waste materials, fluids, and dead skin cells. [3]
