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Repeated ear infections associated with common cold is due to the connection between the ear and the nose. The ear, nose and throat have a common connection posteriorly. The ear is connected to the nose and the throat through the eustachian tube. When there is an infection in the nose, like the cold, the secretions from the nose are carried back into the throat, where the secretions form a plug near the opening of the eustachian tube into the throat. This results in the blocking of eustachian tube, pooling up of secretions, and the resulting infections. The symptoms In this condition usually, are nose block, discharge from the ears, hearing difficulties,etc.