Superficial And Cutaneous Fungi Flashcards
Tinea (pityriasis) versicolor
hypo or hyper pigmentation of skin
spaghetti and meatballs appearance
Tinea nigra
presence of brown to black non scaly markings on palms of hand and less commonly the dorsa of feet
light brown often branching, septate hyphae and budding cells
Black piedra
fungal infection of scalp hair characterized by presence of hard, dark brown to black nodules adhering to hair shaft
White piedra
hair infection characterized by nodules attached to the hair shafts on head, axilla, and genital area
Tinea pityriasis
Malassezia furor also known as
Tinea nigra
Hortaea werneckii also known as
Black piedra
Piedraia hortae also known as
White piedra
Trichosporon species also known as
Dermatophyte
term used to group the various keratinophilic fungi that cause infections of the skin, hair and nails
Trichophyton
infects hair, nails and skin
Epidermophyton
infects skin and nails
Microsporum
infects skin and hair
Cutaneous mycosis
involves deeper layers of the epidermis
Tinea pedia
athletes foot
Tinea pedia - athletes foot
an infection of the spaces between the toes (interdigital) characterized by itching and scaling
Tinea corporis
ringworm
Tinea corporis - ringworm
an infection of smooth skin characterized by circular patches of scaly skin
Tinea unguinum
onychomycosis also known as
Tinea unguinum - onychomycosis
an infection of the nails characterized by discoloration, thickening and progressive destruction of the nails
Tinea capitis
an infection of the scalp characterized by circular bald patches on the scalp
TInea barbae
barbers itch also known as
Tinea barbae - barbers itch
infection of beard hair characterized by skin lesions
Tinea cruris
jock itch also known as
Tinea cruris - jock itch
infection of groin characterized by itching and scaling of groin area
Ectothrix
arthroconidia of fungus appear as a sheath around the hair or as chains on the surface of the hair shaft
Endothrix
chains of arthroconidia filling the insides of hair shaft
Anthropophilic
prefer growing on humans, transmitted human to human
Zoophilic
primarily infect animals but occasionally humans
Geophilic
usually found in soil but occasionally infect humans and animals
Trichophyton mentagrophytes
septate hyphae with grape like clusters
hair perforation test (+)
Trichophyton rubrum
septate hyphae club shaped
Trichophyton verrucosum
elongated “rat tail” macroconidia
round to drop shaped
chlamydoconidia
Epidermophyton floccosum
smooth/thin walled, club shaped, contain 2-5 cells and are numerous in number
NO microconidia
Microsporum audounii
chlamydoconidia with pointed ends
pectinate (comblike) hyphae
Microsporum canis
spindle shaped, tapered ends with 6-15 cells - macroconidia
Microsporum gypseum
thin walled tapered at both ends, containing 4-6 cells - macroconidia
drop shaped microconidia