Fast Five Quiz: How Familiar Are You With Otitis Externa?

Russell W. Steele, MD


October 17, 2018

OE is most often caused by a bacterial pathogen; other varieties include fungal OE (otomycosis) and eczematoid (psoriatic) OE. In one study, 91% of cases of OE were caused by bacteria. Others have found that as many as 40% of cases of OE have no primary identifiable microorganism as a causative agent. The most common causative bacteria are Pseudomonas species (38% of all cases), Staphylococcus species, and anaerobes and gram-negative organisms.

For more on the etiology of OE, read here.


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