1333. Causes of mastoiditis, s/sx, Rx // Sudden hearing loss ddx November 14th, 2009 by reuben in ear Back Top Tags: card 1332. Necrotizing external otitis (malignant otitis externa): pathogen, RF, progression & pathophys, signs & symptoms, Rx 1334. 90% epistaxis is localized to where? / Arteries involved / Etiologies of epistaxis / Management options Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.