Perichondritis
Definition
Perichondritis is an infection of the skin and tissue surrounding the cartilage of the outer ear.
Overview, Causes, & Risk Factors
Cartilage is the thick tissue that creates the shape of the nose and the outer ear. All cartilage has a thin layer of tissue around it called the perichondrium. This covering helps provide nutrients to the cartilage. The most common bacteria that causes perichondritis infection is Pseudomonas aeruginosa.
Perichondritis is usually caused by injury to the ear due to ear surgery, ear piercing (especially piercing of the cartilage), or contact sports. Ear piercing through the cartilage is probably the most significant risk factor today. Surgery, burns, and acupuncture also increase the risk of infection. Perichondritis can cause severe damage to the ear structure if it becomes chondritis -- infection of the cartilage itself.
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