Friday 29 June 2012

127.MOST COMMON ORGANISM CAUSING OTOMYCOSIS

A.MUCOR
B.ASPERGILLUS
C.CANDIDA
D.PENCILLIUM

ANS:ASPERGILLUS

Otomycosis is fungal infection of the external auditory canal.

The incidence of otomycosis is not known but it is more common in hot climates and in those who indulge in aquatic sports. About 1 in 8 of otitis external infections is fungal in origin. 90% of fungal infections involve Aspergillus spp. and the rest Candida spp. The prevalence rate has been quoted as 9% of patients presenting with signs and symptoms of otitis externa. The fraction of otitis externa that is otomycosis may be higher in hot climates and much of the literature originates from tropical and subtropical countries. the diagnosis of otitis externa is made most often in late summer when swimming is most common.


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