5-CUTANEOUS-FUNGI Flashcards
- Affects the dermis and its appendages (hair follicles, nails)
CUTANEOUS FUNGI (DERMATOPHYTES)
- causes “ring-worm” disease on the skin, hair and nails especially the stratum corneum
CUTANEOUS FUNGI (DERMATOPHYTES)
- an infection of the spaces between the toes
Tinea pedis
- Also known as “athlete’s foot”
Tinea pedis
- Caused by Trichophyton and Epidermophyton
Tinea pedis
- Clinical manifestation: itching and scaling
Tinea pedis
- infection of smooth skin
Tinea corporis
- Also known as “ring worm”
Tinea corporis
- Caused by Microsporum and Trichophyton
Tinea corporis
- Clinical manifestation: circular patches on scaly skin
Tinea corporis
- infection of the nails
Tinea unguium
- Also known as “onychomycosis”
Tinea unguium
- Caused by Microsporum and Trichophyton
Tinea unguium
- Clinical manifestation: yellow discoloration, thickening, and
progressive destruction of the nails
Tinea unguium
- infection of the scalp
Tinea capitis
- Caused by Microsporum and Trichophyton
Tinea capitis
- Clinical manifestation: circular, bald patches on the
scalp
Tinea capitis
- infection of beard hair
Tinea barbae
- Also known as “barber’s itch”
Tinea barbae
- Caused by Microsporum and Trichophyton
Tinea barbae
- Clinical manifestation: scaling and skin lesions
Tinea barbae
- infection of the groin
Tinea cruris
- Also known as “jock itch”
Tinea cruris
- Caused by Trichophyton and Epidermophyton
Tinea cruris
- Clinical manifestation: scaling and itching of the groin
area
Tinea cruris
Area Affected
Hair/skin
Microsporum
Area Affected
Hair/skin/nails
Trichophyton
Area Affected
Skin/nails
Epidermophyton
Macroconidia
+
Microsporum
Macroconidia
+
Epidermophyton
Macroconidia
+
Epidermophyton
Microconidia
+
Microsporum
Microconidia
Many
Trichophyton
Epidermophyton
Teleomorph
+
Microsporum
Teleomorph
+
Trichophyton
Epidermophyton
Slow growers
Microsporum
SABHI at room temperature: light tan, with a salmon-colored reverse
Microsporum
- SABHI at room temperature: colonies within 7 to 10 days
Trichophyton
- Buff Granular Colonies: rose to tan colored, with a yellow, brown, or red
reverse within 7 days
Trichophyton
- White Fluffy Colonies: with a colorless to yellow reverse after 10 days
Trichophyton
MACROCONIDIA:
- rough/thin walled, spindle-shaped, contain 4-15 cells, and are numerous in
number
Microsporum
MICROCONIDIA:
- club-shaped, single, and few in number
Microsporum
- Macroconidia: smooth/thin walled, pencil shaped, contain 3-7 cells, and are
few in number
Trichophyton