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Título del libro: Aspergillosis: From Diagnosis To Prevention
Título del capítulo: Aspergillus Otitis

Autores UNAM:
JOSE ALEXANDRO BONIFAZ TRUJILLO;
Autores externos:

Idioma:

Año de publicación:
2010
Palabras clave:

Aspergillus; Aspergillus niger; Otitis externa; Otomycosis; Swimmer's ear


Resumen:

Aspergillus otitis is a superficial mycosis that usually affects the external auditory canal. It is the most frequent aetiology of otomycosis, with Aspegillus niger and Aspergillus flavus being the most frequent agents. It is a cosmopolitan condition that occurs more often in warm and humid climates, usually affecting young adults. Major predisposing factors include: humidity, poor hygiene and treatment with antibacterial drugs and steroids. Clinically the infection may present with oedema, scabs, erythema and epithelial exfoliation, with symptoms like itching and hearing loss. The diagnosis is established by the observation of fungal forms in the direct exam (hyphae, conidia and Aspergillus heads), and with repeated cultures in special media. Topical treatment is effective and includes cleaning of the outer auditory canal to remove the cell debris, sebum and fungal growth. Topical antifungal agents are useful and may be used as concomitant therapy with systemic antibiotics to reduce relapses.


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