<unk>  is the common name for an exostosis or abnormal bone growth within the ear canal.<unk>  is not the same as swimmer's ear, although infection can result as a side effect. Irritation from cold wind and water exposure causes the bone surrounding the ear canal to develop lumps of new bony growth which constrict the ear canal. Where the ear canal is actually blocked by this condition, water and wax can become trapped and give rise to infection. The condition is so named due to its prevalence among cold water<unk> s. Warm water<unk> s are also at risk for exostosis due to the evaporative cooling caused by wind and the presence of water in the ear canal. Most avid<unk> s have at least some mild bone growths (exostoses), causing little to no problems. The condition is progressive, making it important to take preventive measures early, preferably whenever surfing. The condition is not limited to surfing and can occur in any activity with cold, wet, windy conditions such as windsurfing, kayaking, sailing, jet skiing, kitesurfing, and diving.
Surfer's ear
Morel's ear
Christmas eye
Preauricular sinus and cyst
Protruding ear
Rectovestibular fistula
Neuroendocrine adenoma middle ear
Acalvaria