Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
Fungal infections of the superficial
stratum corneum with little or no inflammatory response |
Superficial Mycoses
|
|
-Brown/Black macules on palms/soles
-Asymptomatic; only in outer dead layer of skin -dimorphic fungus found What is the dz and etiology? |
Tinea Nigra
Exophiala wernickii |
|
-Scaly with hypo or hyperpigmented patches on the neck, torso, or limbs.
--Asymptomatic; only in outer dead layer of skin -Fungus found with short curved, septate hyphae and yeast-like cells (Spaghetti and meatballs) What is the dz and etiology? |
Tinea Versicolor
Malassezia furfur |
|
-Superficial fungal infection that appears as cream, yellow or beige nodules along hair shaft
-produces hair breakage What is the dz and etiology |
White Piedra
Trichosporon sp. |
|
-Fungal infection of the scalp hair, less often of the beard and rarely of axillary hair
-Hard, gritty, brown/black nodules firmly attached to hair shaft -Tropics Dz and etiology? |
Black Piedra
Piedraia hortae |
|
Sp. that Contains asci
|
Piedraia hortae
|
|
Three genera of dermatophytes
|
Trichophyton
Epidermophyton Microsporum |
|
Virulence factor of dermatophytes
|
produce keritinase
|
|
-Infection of GLABROUS skin
-ANNULAR lesions with active border that may be pustular or vesicular |
Tinea corporis
|
|
Dermatophytosis of the plantar surface of the feet and toe webs
|
Tinea pedis
|
|
Dermatophytosis of the medial upper thighs and the inguinal, pubic, perineal and perianal areas.
|
Tinea cruris
|
|
-Hyphal invasion of scalp spreads to hair follicle
-Patches of alopecia, scaling and itching |
Tinea Capitis
|
|
Fungus inside hair shaft
|
Endothrix
|
|
Fungus outside hair shaft
|
Ectothrix
|
|
-Affects the facial beard area of men
-inflammation characterized by elevated nodules, draining pustules and sinus tracts |
Tinea barbae
|
|
Commonest cause of Onychomycosis (Tinea unguim)
|
Trichophyton rubrum
|
|
inflammation produced by chafing of adjacent areas of skin.
Dx? Etiology? |
Intertrigo
Cutaneous Candidiasis |
|
-Thorn prick
-Chronic nodular and ulcerative lesions -Follow lymph nodes draining site of infection Dx? and Etiology |
dx: Lymphocutaneous Sporothrichosis
et: Sporothrix schenckii |
|
--Chronic, localized cutaneous to
subcutaneous infection –warty nodules at inoculation site with “cauliflower like”appearance --Infected tissue contain sclerotic or muriform bodies Dx? |
Chromoblastomycosis
|
|
--wide spectrum of manifestations involving the skin and deeper tissues.
--Lesions are deforming, swollen with many draining sinuses. Dx? Etiology? |
dx: Mycetoma
Et: ActinoMycetoma (bact) or EuMycetoma (fungus) |
|
Fluoresces under Wood's lamp
|
Microsporum spp. scalp infections
|
|
Culture medium for fungi
|
Sabouraud agar
containing antibiotics and actidone |