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Nasal congestion can impair your hearing if it causes your eustachian tubes to be blocked. Whether the congestion is caused by allergies or a cold, the skin gets swollen and the eustachian tubes cannot drain the fluid from the middle ear into the back of your throat.
If the middle ear fluid cannot drain, the eardrum does not vibrate as effectively when hit by sound waves. When the eardrum does not vibrate effectively, the sound is muffled.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.