Ver el código de «Auricular perichondritis»

==Background==
*Perichondritis is an infection of the connective tissue of the ear that covers the auricle or pinna
**Typically does not involve the lobule
**Misnomer as the cartilage is almost always involved with abscess formation and cavitation
*May be a devastating disease if improperly treated
**can lead to liquefying chondritis
*Most common causes include minor trauma, burns, and ear piercing
**growing incidence may be related rising popularity of high chondral ear piercings
**May be a presenting symptom of immunosuppresion
***HIV, Diabetes, Non-Hodgkin's lymphoma, or relapsing polychondritis
*The most common microorganism responsible for perichondritis is Pseudomonas Aeruginosa
**One study identified Pseudomonas as the causative organism in 95% of cases
**Co-infection with E.Coli in half of cases
**Staph Aureus in 7% of patients

==Clinical Features==
*Initially presents with dull pain, progresses to severe otalgia
*Purulent discharge
*Erythema, swelling, tenderness of the auricle without notable fluctuance
*No involvement of the lobule which distinguishes it from otitis externa

==Differential Diagnosis==
*[[Otitis Externa]]
*[[Mastoiditis]]
*[[Auricular Hematoma]]
*[[Herpes zoster oticus]]
*[[Malignant otitis externa]]

==Evaluation==
*Diagnosis is made clinically by thorough physical exam
**Exam should include evaluation of mastoid process, temporal bone, facial bones, orbital bones, and middle ear

==Management==
*Anti-pseudomonal antibiotic therapy
**Ciprofloxacin 750mg q12 hours for 7 days
**2nd line: Add Clindamycin 450mg q6 hours for 7 days
*Consider incision and drainage by ENT

==Disposition==
*May discharge home for outpatient treatment
**consider specialist evaluation and hospital admission if abscess or necrosis are suspected

==See Also==

==External Links==

==References==
<references/>
Caruso, Andria M., Macario Camacho Jr, and Scott Brietzke. “Recurrent auricular perichondritis in a child as the initial manifestation of insulin-dependent diabetes mellitus: A case report.” ENT: Ear, Nose & Throat Journal 93.2 (2014). (PMID: 24526489)

Prasad, H. Kishore C., et al. “Perichondritis of the auricle and its management.” The Journal of Laryngology & Otology 121.6 (2007): 530-534. (PMID: 17319983)

Liu, Z. W., and P. Chokkalingam. “Piercing associated perichondritis of the pinna: are we treating it correctly?.” The Journal of Laryngology & Otology 127.5 (2013): 505-508. (PMID 23442437)

Rees, Chris A., Daniel M. Rubalcava, and Corrie E. Chumpitazi. “A child with a painful swollen ear.” Archives of disease in childhood 101.9 (2016): 859. (PMID: 27102760)