When you have an upper respiratory infection, you may wonder why you have an ear infection as well. This is because the nasal cavity is connected to the Eustachian tube. Normally, when you have a cold, this tube closes up to prevent the mucus from entering the auditory canal. When your Eustachian tube fails to close up, the excessive mucus that’s produced in the nasal cavity then pours out into the ear canal. This results to an even more aggravated ear infection. Continue reading →