Dertamophytoses 1
A superficial mycosis of the nail by a dermatophyte, also known as onychomycosis
What is tinea unguium?
Chronic mycoses involving dermatophytes often occur in this special patient population
What are immunocompromised patients
The causative organism in tinea versicolor
What is Malassezia furfur
The causative organism in tinea nigra
What is Hortaea werneckii
The body location of where piedra is localized to
What is the hair shaft
A variant of tinea corporis involving dermatophyte invasion of the dermis and/or hair follicle, associated with perifollicular papules
What is Majocchi's granuloma
A term for the characteristic skin finding in tinea corporis involving circular, erythematous, pruritic plaques that spread centrifugally and have central clearing with active, advanced, raised borders
What is bull's-eye rash
A pathognomonic description for the clusters of thick-walled round, budding yeast-like cells and short angular hyphal forms
What is "spaghetti-and-meatballs" appearance
The color of the causative organism in tinea nigra both in the yeast-form when grown in culture and in the skin lesion in disease
What is black
The name for the variant of piedra involving hyphae and arthroconidia
What is white piedra
Diagnosis of dermatophytoses is aided by KOH examination to reveal ______ ______ in skin scrapings from the advancing margins and hair
What are septate hyphae
Two components of the immune system that typically control most dermatophytoses (and generally most mycoses)
What are innate and cell-mediated immunity
The type of skin where the causative organism in tinea versicolor normally inhibits
What are seborrheic areas
Name one of the typical body locations tinea nigra manifests
What are the palms or soles
The name for the variant of piedra involving only hyphae
What is black piedra
An antifungal drug used for both non-extensive and extensive mycoses in topical and oral formulations, respectively
What is terbinafine
A diagnostic test utilizing ultraviolet light indicated in tinea capitis mycoses to reveal fluorescing hair fragments
What is Wood's light or Wood's lamp (only for Microsporum spp.)
Name one of the body locations tinea versicolor commonly affects
What are upper chest, back, and upper arms
The mode of transmission in tinea nigra
What is direct contact
The causative organism in the variant of piedra involving hyphae and arthroconidia
What is Trichosporon cutaneum
Name one of the three major genera of dermatophytes
What are epidermophyton, microsporum, or trichophyton
An antifungal drug used to treat Majocchi's granuloma, tinea barbae, tinea capitis, and extensive or deep mycoses but not superficial or non-extensive mycoses
What is itraconazole
The dermatologic term for the skin lesion found in tinea versicolor that ranges from white to tan with fine powdery scale
What are macules
Name one of the typical immune responses to infection that is absent in lesions of tinea nigra
What are inflammation or edema
The causative organism in the variant of piedra involving only hyphae
What is Piedraia hortae