Otitis externa is a topic covered in the Guide to Diagnostic Tests.

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Organism

Otitis externa

Acute localized: S. aureus (15%) (GPC), anaerobes (32%), S. pyogenes (GPC in chains), H. influenzae , other gram-positive cocci.

“Swimmer’s ear”: Pseudomonas sp. (40%) (GNR), fungi (6%) (eg, Aspergillus sp., Candida sp.).

Chronic: Usually secondary to seborrhea or eczema.

Diabetes mellitus, AIDS (“malignant otitis externa”): P. aeruginosa (GNR), Aspergillus sp., Candida sp.

Furuncle of external canal: S. aureus.

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Citation

* When formatting your citation, note that all book, journal, and database titles should be italicized* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Otitis externa ID - 619372 A1 - Lu,Chuanyi Mark, AU - McPhee,Stephen J, AU - Nicoll,Diana, BT - Guide to Diagnostic Tests UR - https://im.unboundmedicine.com/medicine/view/GDT/619372/all/Otitis_externa PB - McGraw-Hill Education ET - 7 DB - Medicine Central DP - Unbound Medicine ER -