piedra Flashcards
black piedra
Piedraia hortai
KOH
Oval asci cont 2 to 8 ascospores and mycelium.
Culture of black colonies
Hyphae and chlamydospores
white piedra
trichosporon.( trichosporum) beigelii or trichosporon inkin in temperate climates
pubic white piedra
T inkin
Onychomycosis
T beigelii
sheaths composed of
hyphae; arthrospores
bacteria
culture
Cream coloree colonies comp of blastospores abd septate hyphae which fragment into arthrospores.
Tx
cutting or shaving the hair
oral and topical terbinafine- black piedra.
oral itraconazole, topical imidazole, ciclopirox; olamine, 2% selenium sulfide, 6% precipitated sulfur in petrolatum; chlorhexidine sol, castellani paint; zinc purthiione, amp B, 2-10% glutaraldehyde.