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Perichondritis of the ear involves infection of the perichondrium of the pinna in which pus accumulates between the cartilage and the perichondrium.
Causes of perichondritis include trauma, insect bites, body piercings, and incision of superficial infections of the pinna. Because the cartilage's blood supply is provided by the perichondrium, separation of the perichondrium from both sides of the cartilage may lead to avascular necrosis and a deformed pinna. Septic necrosis may also ensue, often with infection by gram-negative bacilli. Symptoms include redness, pain, and swelling. The course of perichondritis tends to be indolent, long-term, and destructive.
The affected area is incised, and a drain is left in place for 24 to 72 h. Systemic antibiotics are initiated with an aminoglycoside and semisynthetic penicillin. Subsequent antibiotic choice is guided by culture and sensitivity tests. Warm compresses may help.
Last full review/revision July 2008 by Eiji Yanagisawa, MD
Content last modified July 2008
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