![]() In some cases, CT scans may also be taken. Types of ear infectionsEar infections are diagnosed by physical examination and laboratory analysis of pus or discharge. overzealous cleaning of the ears, which can scratch the delicate tissues.failing to dry the outer ear properly after swimming or bathing.young age – babies and children are more prone to ear infections. ![]() smaller than average Eustachian tubes, or a blocked Eustachian tube.sudden changes in air pressure – such as during airline travel.This can cause ear infections, mild deafness and an increased likelihood of a ruptured eardrum.Ĭauses of ear infectionsSome of the many causes of ear infection and contributing risk factors include: If the Eustachian tube is blocked, secretions and associated bacteria build up inside the middle ear. Whenever we swallow, a small muscle flexes and opens the tube, allowing air pressure equalisation and the drainage of secretions. The walls of the Eustachian tube lie flat against each other to prevent the migration of bacteria or other germs into the ear from the nose and throat. This tube equalises air pressure inside the ear, and funnels secretions from the middle ear into the throat. The function of the Eustachian tubeThe ear is connected to the back of the nose via the Eustachian tube. noises in the ear – such as buzzing or humming. ![]()
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