MYCOSES Flashcards
- The fungal infection is in the OUTERMOST part of the skin (KERATIN)
- NO immune response
Superficial Mycoses
Superficial Mycoses Organisms: (MHPT)
Malassezia furfur (Skin)
Hortaea werneckii (Skin)
Piedraia hortae (Hair)
Trichosporon beigielli (Hair)
Malassezia furfur (Skin)
Infection: ____ ____
- Pale patches, dry scaly skin
- Fawn -colored spots in fair skin
Tinea versicolor
T/F
Tinea Versicolor is also known as Pityriasis versicolor
TRUE
Malassezia furfur (Skin)
Lab Diagnosis:
- ____ under the microscope
- ____ fluorescence (+)
- ____
Spaghetti and meatballs
Wood’s lamp
Lipophilic
Hortaea werneckii (Skin)
Infection: ___ ___
- brown to black non-scaly macules in on palms/soles
Tinea nigra
Hortaea werneckii (Skin)
Lab Diagnosis
Greenish black colonies
Piedraia hortae (Hair)
Infection: ____ ____
- brown to black crusts/nodules on hair
Black Piedra
Piedraia hortae (Hair)
Lab DIagnosis:
- ____ containing ____ ascospores
- ____ restricted colonies
- Asci containing 8 ascospores
- Brown restricted colonies
Trichosporon beigielli (Hair)
Infection: ____ ____
- light brown soft nodules
White Piedra
Trichosporon beigielli (Hair)
Lab Diagnosis
- Arthroconidia
- Yeast-like colonies
- Outer-inner part of the skin
- Can elicit immune response
Cutaneous Mycoses
Cutaneous Mycoses Infections (FCBCCPU)
- Tinea favosa
- Tinea Capitis
- Tinea barbae
- Tinea corporis/ Tinea imbricata
- Tinea cruris
- Tinea pedis
- Tinea unguium (onychomycosis)
- Body part Infected: Scalp
- Organism: T. schoenleinii
Tinea favosa
- Body part Infected: Scalp
- Organism: M. audouinii, M. ferrugineum, T. tonsurans, T. violaceum
Tinea Capitis
- Body part Infected: Beard
- Organism: Trichophyton
Tinea barbae
- Body part Infected: Body
- Organism: Trichophyton, Microscporum, T.concentricum
Tinea corporis/ Tinea imbricata
- Body part Infected: Groin
- Organism: Epidermophyton
Tinea cruris
- Body part Infected: Feet
- Organism: Trichophyton, Epidermophyton
Tinea pedis
- Body part Infected: Nails
- Organism: Trichophyton, Epidermophyton
Tinea unguium (onychomycosis)
- The fungi already disseminated in the body that can affect internal organs and deep tissues of the body
- All fungi under systemic are dimorphic (has both yeast and mold phase)
Systemic Mycoses
Systemic Mycoses Organisms (BHCPS)
- Blastomyces dermatitidis
- Histoplasma capsulatum
- Coccidiodes immitis
- Paracoccidioides brasiliensis
- Sporothrix schenckii
Ecology: River valleys, basins, soil
Disease: Gilchrist/Chicago/North American, blastomycosis
Blastomyces dermatitidis
Ecology: Bird/bat guano, alkaline soil
Disease: Cave/Spelunker’s/Darling’s histoplasmosis, reticuloendothelial cytomycosis
Histoplasma capsulatum
Ecology: Soil
Disease: Desert bumps (erythema nodosum), San Juan Valley fever (erythema multiforme), Desert rheumatism
Coccidiodes immitis
Ecology: Soil
Disease: South American paracoccidioidomycosis, Lutz-Spledore-Almeida disease, Brazilian mycosis, paracoccidioidal granuloma
Paracoccidioides brasiliensis
Disease: Sporotrichosis, Rose Handler’s disease
Sporothrix schenckii
Organism
Mold: OVAL conidia on short conidiophores
Yeast: BROAD-based blastoconidia (budding yeast)
Blastomyces dermatitidis
Organism
Mold: ROUND, LARGE, tuberculate macroconidia
Yeast: SMALL OVAL yeast
Histoplasma capsulatum
Organism
Mold: BARREL-shaped arthroconidia (Coccidiodes, Geotritchum, Trichosporon)
Yeast: SPHERULES containing endospores
Coccidioides immitis
Organism
Mold: STERILE, hyphae chlamydoconidia (rounding up)
Yeast: “mariner’s wheel”, “mickey mouse cap”
Paracoccidioides brasiliensis
Organism
Mold: SPARSE green aerial hyphae, REDDISH-BROWN vegetative hyphae
Yeast: OVAL to CYLINDRICAL yeastlike
Penicillium marneffei
Organism
Mold: Conidia in ROSETTE/ SLEEVE pattern
Yeast: CIGAR-shaped
Sporothrix schenckii
