The external auditory canal extends from the auricle, or ear lobe, to the tympanic membrane, or eardrum. It provides a pathway for sound to reach the tympanic membrane. Here, the sound is converted into mechanical energy and eventually into stimulation for neurological receptors in the inner ear. The external ear may become obstruction with animate and inanimate objects. They can lead to alteration of hearing, localized pain and infections.
Causes of Foreign Body In The Ear
Foreign bodies can be inanimate objects, such as a pebble or cotton ball. Sharp objects introduced into the canal may tear or injure the linings of the external canal or the eardrum. At times, insects or larvae may dwell in the external auditory canal.
Signs and Symptoms of Foreign Body In The Ear
Foreign bodies within the ear lead to decreased hearing. There may be a sense of fullness within the ear. Irritation or disruption of the lining of the ear canal can lead to localized infections. These can rapidly produce earache, discharge and further impairment of hearing. Sharp foreign bodies introduced into the ear canal can puncture the eardrum, leading to pain and bleeding.
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Medical Content Last Updated on 07/12/2008
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