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Surfer's ear is the common name for an exostosis or abnormal bone growth within the ear canal. Surfer's ear 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 surfers. Warm water surfers 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 surfers have at least some mild bone growths (exostoses), causing little to no problems. The condition is progressive, making it important to take preventative 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. ==Signs and symptoms== In general one ear will be somewhat worse than the other due to the prevailing wind direction of the area surfed or the side that most often strikes the wave first. *Decreased hearing or hearing loss, temporary or ongoing *Increased prevalence of ear infections, causing ear pain *Difficulty evacuating debris or water from the ear causing a plugging sensation Image:Normal canal Image001.jpg|Normal ear canal Image:Normal canal 2 Image001.jpg|Normal ear canal Image:Exostosis Image001.jpg|Exostosis in ear canal Image:Exostosis Image002.jpg|Exostosis in ear canal 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Surfer's ear」の詳細全文を読む スポンサード リンク
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