Malignant otitis externa: Difference between revisions

Revision as of 22:11, 1 March 2015

Life-threatening infection of external ear/canal, soft tissue, +/- spread to skull base
Diabetes and immunosuppression are main risk factors
Pseudomonas causes >90% of cases
Begins as simple otitis externa

More rapidly progressive than in adults
- Fever, leukocytosis, bacteremia/sepsis
TM, middle ear, and facial nerve more likely to be affected

Authors:

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 ==Clinical Features==
-*Adults
+===Adults===
-**Otitis externa that has not resolved despite 2-3wks of topical antibiotics
+*[[Otitis externa]] that has not resolved despite 2-3wks of topical antibiotics
-**Otalgia
+*[[Otalgia]]
-***Often out of proportion for routine otitis externa
+**Often out of proportion for routine otitis externa
-**Edema of external auditory canal
+*Edema of external auditory canal
-**Granulation tissue often seen in the ear canal floor
+*Granulation tissue often seen in the ear canal floor
-**CN IX, X, or XI involvement
+*CN IX, X, or XI involvement
-**Trismus
+*Trismus
-*Peds
-**More rapidly progressive than in adults
+===Pediatrics===
-***Fever, leukocytosis, bacteremia/sepsis
+*More rapidly progressive than in adults
-**TM, middle ear, and facial nerve more likely to be affected
+**[[Fever]], leukocytosis, bacteremia/[[sepsis]]
+*TM, middle ear, and facial nerve more likely to be affected
+==Differential Diagnosis==
+{{Ear DDX}}
 ==Diagnosis==