Pathogenesis > Infectious Disease > Fungus > Alternaria

Phaeohyphomycoses

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represent a broad spectrum of dematiaceous fungal infection
but neither sclerotic bodies (chromomycosis) nor granules (mycetoma) are seen
superficial phaeohyphomycoses confined to stratum corneum
black piedra piedra hortae
t. nigra Pheoannellomyces Werneckii
cutaneous phaeohyphomycoses keratinized tissue e.g. alterneria alternaria culture = hand grenades onychomycosis
subcutaneous phaeohyphomycoses (phaeomycotic cyst alterneria)  = traumatic implantation; often contain a peanut butter-like material