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Ear Ear. Inside an Ear. Ear Camera. Causes of hearing loss. Disease Some illnesses affect the ear and can cause hearing loss. Drugs Some medicines can damage the ears if they are used for a long time. Trauma
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Causes of hearing loss • Disease • Some illnesses affect the ear and can cause hearing loss. • Drugs • Some medicines can damage the ears if they are used for a long time. • Trauma • Foreign objects poked in the ear, sudden changes in air pressure and very loud noises can all damage the ear. • Age • Higher frequencies are harder to hear after the age of 20. People don’t usually notice until they are over 55. • Noise • Hearing loud noises (over 85dB) for a long time causes hearing loss.
The Ear Drum (tympanic membrane) Normal Eardrum Burst (perforated) eardrum
Hairy Ears Normal hairs Damaged hairs Rows of hair cells