Perichondritis is an infection of the skin and tissue surrounding the cartilage of the outer ear.
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 type of bacteria that causes perichondritis infection is Pseudomonas aeruginosa.
Perichondritis is usually caused by an injury to the ear due to:
- Ear surgery
- Ear piercing (especially piercing of the cartilage)
- 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, which is an infection of the cartilage itself.
A painful, red ear is the most common symptom. At first, the infection will look like a skin infection, but it quickly worsens and involves the perichondrium.
The redness usually surrounds an area of injury, such as a cut or scrape. There may also be fever. In more severe cases, fluid will drain from the wound.
Exams and Tests
Perichondritis is diagnosed based on the person's medical history and by examining the ear. If there is a history of trauma to the ear and the ear is red and very tender, then perichondritis is diagnosed. There may be a change in the normal shape of the ear. The ear may look swollen.
Treatment consists of antibiotics, either by mouth or directly into the bloodstream through an intravenous line (IV). If there is a trapped collection of pus, surgery may be necessary to drain this fluid and remove any dead skin and cartilage.
How well a person does depends on how quickly the infection is diagnosed and treated. If antibiotics are taken early, full recovery is expected. If the infection involves the ear cartilage, more involved treatment is needed.
If the infection spreads to the ear cartilage, part of the ear may die and need to be surgically removed. If this occurs, plastic surgery may be needed to restore the ear to its normal shape.
When to Contact a Medical Professional
If you suffer any trauma to your ear (a scratch, blow, or piercing) and then develop pain and redness over the stiff part of the outer ear, contact your health care provider. You may need to take antibiotics.
The best way to prevent this infection is to avoid piercing your ear through the cartilage (as opposed to the ear lobe). The popularity of cartilage piercing has led to a significant increase in the number of perichondritis and chondritis infections.
Guss J, Ruckenstein MJ. Infections of the external ear. In: Cummings CW, Flint PW, Haughey BH, et al, eds.Otolaryngology: Head & Neck Surgery.
Update Date 12/7/2014
Updated by: Jatin M. Vyas, MD, PhD, Associate Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.