âº A donor is also someone who gives blood or who agrees to give an organ or body part to help someone else. (Definition of âdonorâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)
Middle ear and outer ear infections are common causes of sharp ear pain. An infection of the inner ear, formally called labyrinthitus, may cause sharp pain as well as a loss of balance. People with a bad cold or the flu often experience sharp ear pain.
A perforation is a hole in the eardrum. Eardrum perforations are caused by middle ear infections and injuries. Perforation causes sudden ear pain, sometimes with bleeding from the ear, hearing loss, or noise in the ear. Doctors can see the perforation with an otoscope. Usually the eardrum heals on its own, but sometimes surgical repair is needed.