Middle ear infection in children is much more common than in adults, in part because of how this part of the ear is designed.

This forces air back through the Eustachian tube, which connects the back of the nose to the middle ear. Opening of this tube may allow the middle ear fluid to drain away. What did we want to find out ...

When the brain gets shaken, it can result in a concussion -- an injury that often goes unnoticed or underestimated.