Cauliflower ear or perichondrial hematoma is a condition common among rugby players (particularly forwards), boxers, martial artists and wrestlers. If the external portion of the ear is constantly hit or bashed around, a blood clot may develop under the perichondrium. This separates the cartilage from the overlying perichondrium that is its source of nutrients, causing the cartilage to die. When this happens, the outer ear becomes permanently swollen and deformed.
Headgear that protects the ears is worn in many martial sports to help prevent this risk.
Among some athletes, it is seen as a badge of honor, a scar of experience.
Traditionally, leeches have been used in order to reduce swelling.
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