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11 Causes of a Metallic Taste in the Mouth

7. Ear Surgery

Surgery to the middle ear and ear tube can affect the sense of taste and result in a metallic taste in the mouth. A branch of the facial nerve that starts in the taste buds at the front of the tongue and runs through the middle ear carries taste messages to the brain. If this nerve is damaged during ear surgery, it can lead to distortions of taste, which can result in a metallic taste in the mouth. This can disappear as the nerve heals and there is a study which showed significant improvement in taste as a result of medication management.

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