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Fungal infections of keratinized tissues (hair, skin, nails) can be caused by dermatophytic fungi belonging to the genera Epidermophyton, Microsporum, and Trichophyton. Opportunistic superficial infections resembling dermatophytoses may be caused by yeasts or by unrelated filamentous fungi that are normally saprobes or plant pathogens. Dermatophytes are usually unable to penetrate deeper tissues. Infection may range from mild to severe.
Recovery and identification of dermatophyte fungi from hair, skin, and nail infection specimens
Positive cultures are reported with organism identification.
Negative reports are issued after 30 days incubation.
Aseptic techniques should be used when collecting specimens to minimize contamination.
For optimal recovery of organisms, sufficient clinical material should be collected.
If positive, fungus or yeast will be identified.
Summerbell RC, Weitzman I, Padhye AA: Trichophyton, Microsporum, Epidermophyton and agents of superficial mycoses. In Manual of Clinical Microbiology. Ninth edition. Edited by PR Murray, EJ Baron, et al: Washington DC. ASM Press, 2007, pp 1874-1897