4Cutaneous Flashcards
Skin and nail only
Epidermophyton
Infections extend deeper into the epidermis
Invasive hair
Nail diseases
Hair, skin, nail
Trichophyton
Species that invade skin and hair
Canis
Gypseum
Keratinophilic fungi
Dermatophytes
Resistant to cyclohexamide
Dermatophytes
3 groups depending on habitat
Antropo
Geo
Zoophilic
Geophilic
Gypseum
Antropo
Rubrum
T or f? Reinfection is possible
True, large inoculum is needed
Ringworm of the scalp
Capitis
Hair invasion is divided into 3 parts
Ectothrix
Endothrix
Favus
T or f? In ectothrix, cuticle is destroyed and fluoresce a green yellow under wood lamp
T
Example of favus species
Trichophyton schoenleinii
Communicable ectothrix infection
Gray patch ringworm
Endothrix infection
Black dot
Typical annular lesions on the smooth parts of the body
Tinea corporis
Tinea corporis acquired from?
Cats and dogs
Chronic infections
T rubrum
T or f? Corporis Survive off human body as spores
True
Ringworm of the bearded area
Barbae
Barbae common among
Farmworkers
Tinea barbae etiologic agent
Mentagrophytes
Ringworm of the groin, perineum, perianal areas
Cruris
Tinea cruris is commonly known as
Jock itch
Etiologic agent of jock itch
E floccossum
Cruris _______ with inflamm vesicular enlarging
Circinate
Serpiginous
Most common fungal infection among adolescents
Tinea pedis
3 main forms of tinea pedis
Mocasin
Interdigital
Vesicular
Sudden appearance of itchy painful blisters; instep, heel or ball of the foot
Vesicular
Mocasin form is found in
Soles
Involvement of nails by dermatophyte
Unguium
Nail infections caused by non dermophytic fungi
Onychomycosis
Unguim begins at what part of nail? Termed as?
Lateral or distal
“Par- onychial”
Transmission of tinea unguium
Sharing of clothes
Human contact
Zoophilic
Pigments? M canis T mentagrophytes T rubrum E flocossum
Lemon yellow
Less intense red
Burgundy red
Khaki green
Flat granular colony radiating
Tonsurans
Suede colony
Floccosum
Colony of m canis
Cotton or wooly
Sugary surface
M gypseum
Clavate macroconidium, absent micro
Epidermo
Present microconidium with clavate or fusiform
Trichophyton
Acute phase Foot infections tx
Kmno4
Chronic phase foot infections tx
Powder am
Cream pm
Barrel, pointed macroconidia
Canis
Barrel, rounded macroconidia
M gypseum