Fungal Flashcards
Describe generalized cutaneous candidiasis
- unusual, diffuse eruptions over the trunk, thorax and extremities
- pruritis
Where is generalized cutaneous candidiasis located?
- genitocrural folds
- anal region
- axillae
- hands
- feet
Describe intertrigo
- vesiculopustules in intertriginous areas
- maceration & fissuring
- satalite lesion
What is a causative activity for paronychia and onychomycosis?
- immersion of the hands in water
- DM
What is the treatmen for Candidiasis?
- azole antifungals
- glucan synthesis inhibitors
- polyenes
- allylamines
tinea capitis
- scalp
tinea corporis
- trunk
- extremities
ringworm
- tinea corporis
tinea manuum
- hands
tinea pedis
- ‘athletes foot’
What is a ddx of tinea pedis and how do you tell the difference?
- contact dermatitis does not involve area between toes
tinea cruris
- groin
- ‘jock itch’
tinea barbae
- beard
- neck
tinea faciale
- face
tinea unguium
- nail
- ‘onychomycosis’
ectothrix
- conida form on the exterior of the hair shaft
- hair is destroyed
What are the two types of ectothrix?
- green/yellow fluorescence
- nonlfuroescent
What are green/yellow fluroecent ectothrix?
- Microsporum species
What are the non fluorescent ectothrix?
- Trichophyton species
endothrix
- conida form within the hair shaft
- shaft filled with hyphae and spores
- hair is not affected or destroyed
What type of species is an endothrix?
- non fluorescent
- Trichophyton
kerion
- thick plaques and boggy skin
- Microsporum canis
What can be odd presentation with tinea?
- Id reaction
- tinea incognito
What is tinea incognito?
- result of a prior treatment with hydrocortisone causing atypical appearance
How is tinea diagnosed?
- direct microscopic exam
- fungal cultures
- UV light
What is the treatment for tinea corporis?
- topical agents
What is the treatment for tinea capitis and nail infections?
- oral antifungals
What causes tinea versicolor?
- Malassezia furfur
- yeast
How does tinea versicolor present?
- hypo or hyperpigmentated macules that do not tan
What is the treatment for tinea versicolor?
- selenium sulfide shampoo 15min x 7d
- ketoconazole 1 po and no shower for 18 hrs
How do onychomycosis present?
- hyperkeratosis
- yellow-white or white
How is onychomycosis diagnosed?
- direct microscopy with 20% KOH
- cultures
- PCR
- dermoscopy
What is the treatment of onychomycosis?
- oral antifungals
