Repeated exposure to cold, whether that be wind and/or water may cause an abnormal growth of bone within the ear canal. This is called exostosis or bony exotosis.
The medical term for this bone growth is Exostosis, but more commonly is referred to as ‘surfer’s ear’. This name comes from the fact that the most common cause of Exostosis or surfer’s ear is frequent exposure to cold, be it wind and/or water, making this condition one that often affects surfers, those who surf in cold water. But it is not only surfers who may suffer from Exostosis/surfer’s ear. People who enjoy a variety of other activities in and around the cold water and wind can develop exotosis.
With ongoing exposure to cold wind and water, growth of the bone surrounding the ear canal occurs to protect the eardrum against the harsh elements. Exostosis/surfer’s ear, although not necessarily harmful in itself, however, the constriction of the ear canal can impede the draining of water and ear wax and other debris can get trapped within the ear canal, which may potentially lead to ear infections. Such ongoing infections could plausibly result in permanent hearing loss.
If Exostosis/surfer’s ear is not treated, the bone growth can evolve to a complete blockage of the ear canal.