Fungal Infections Flashcards
M/C/C of Tinea Pedis (Athlete’s Foot)?
Trichophytan Rubrum
What skin findings do you see with Tinea pedis?
- Erythema
- Scaling
- White, mushy, soft, cracked skin between toes
- Pruritis
Tinea Manuum is often _______ and often associated with _______?
- Unilateral (M/C dominant hand)
- Tinea pedis
With Tinea Manuum look for?
Diffuse scaling on palmer aspect + advancing border
*What pts are more prone to fungal infections?
DIABETICS
RF for fungal infections?
- Warm/humid weather
- Obesity
- Tight clothing
- Excessive sweating
- Chronic topical. steroid use
Tinea Cruris
“Jock itch” (usu. itchy)
T/F: You should use cortisone cream for fungal infections
False!!! It’s fertilizer for fungus BADDD
With Tinea Faciei you get less scaling and more?
Inflammation (photosensitizing, gets red with sun exposure)
If Tinea is mistreated with a topical steroid for a while what can develop?
Tinea Incognito (deep red/violaceous follicular papules/pustules)
How can you dx a fungal infection?
- Biopsy
- KOH Test (look for hyphae)
What’s the treatment for ALL Tinea infections besides T. Incognito, T. Capitus, & Onychomycosis)
TOPICAL Antifungals!
- Econazole
- Ketoconazole
Oral antifungals may be used in extensive/resistant cases or in areas where it makes sense that an oral med is needed (i.e hairy areas)
Fungal infection of the nails
Onychomycosis
What do you see with Tinea Capitis?
Who is it m/c in?
- Scaling, broken hairs, painful/boggy nodules on scalp
- Possible scarring alopecia
- M/C in toddlers, school-age kids, African Americans
What is Tinea Versicolor?
Chronic, asx scaling dermatosis associated with the superficial overgrowth of Malassezia furfur (same fungus that causes seborrheic dermatitis)
What skin findings do you see with Tinea Versicolor?
Where does it m/c occur?
- Well-demarcated, scaling patches with varying pigmentation
- M/C on trunk
What do you see on KOH for Tinea Versicolor?
“Spaghetti and Meatballs”
What is Pityrosporum Folliculitis?
Pruritic, monomorphic follicular papule/pustule commonly found on the trunk, NO comedones
RF for Tinea Unguium “Onychomycosis”?
- DM
- Immunosuppression
- Occlusive footwear
Thick yellow discoloration of the nail, m/c big toe
Onychomycosis
How do you treat Onychomycosis?
Since topical antifungals aren’t super effective give oral antifungals like Terbinafine or Fluconazole PO
What skin findings do you see with a Candida (m/c Candida albicans) infection?
Where is it m/c found?
- Beefy red erythema
- Red pinpoint papules/pustules which become umbilicated –> “Satellite lesions”
- Erosions, ulcerations, fissures
- M/C in warm moist skin folds (ex. diaper dermatitis)
How id Candida treated?
- Systemic antifungals like Flucanazole (Diflucan)
- Topical antifungals (powder/drying agent)
What is Angular Cheilitis “Perleche”?
Who is m/c affected?
Possible causes?
- Inflammation of the angles of the mouth which can lead to fissuring, bacterial, or yeast infection
- M/C in elderly
- Aging, poor fitting dentures, chronic lip licking
