Superficial, Cutaneous and Subcutaneous Fungal Infections Flashcards
1
Q
Pityriasis Versicolor (4):
A
- Malassezia furfur
- Asymptomatic colonization of the stratum corneum
- Lipophilic, yeast like organism
- Causes hyper/hypopigmented macular lesions that scale readily
2
Q
Tinea nigra (5):
A
- Superficial fungal infection of the stratum corneum
- Hortaea werneckii
- Traumatic inoculation
- Asymptomatic, well demarcated, slowly expanding, gray to black lesions
- On the palms and soles
3
Q
Cutaneous mycoses (2):
A
- Infections that extend deeper into the epidermis, as well as invasive hair and nail diseases
- Organisms are known as dermatophytes
4
Q
Tinea capitis (3):
A
- Highly contagious
- Hair becomes grayish, dull and brittle
- More common in prepubescent children
5
Q
Cutaneous mycoses treatment (2):
A
- Local: topical miconazole, clotrimazole and econazole
- Systemic: Greseofulvin
6
Q
Most common agent of tinea unguium:
A
Trichophyton rubrum
7
Q
Common features of subcutaneous mycosis infections (4):
A
- Associated with some form of trauma occurring at the site of infection
- Occur on parts of the body that are most prone to trauma
- Etiological agents usually found in soil or on decaying vegitation
- The all produce granulomas
8
Q
Lymphocutaneous sporotrichosis (2):
A
- Begins as a subcutaneous nodule at the site of injury and progresses to lymphatic channels
- Sporothrix schenckii
9
Q
Chromoblastomycosis (3):
A
- Fonsecaea pedrosi
- Most common in tropical and subtropical regions
- Colored lesions that start out scaly and become raised, cauliflower-like lesion
10
Q
Chromoblastomycosis treatment (2):
A
- Surgical excision in the early stages
- 5-flucytosine
11
Q
Phaeohyphomycosis (3):
A
- Characterized by presence of darkly-pigmented fungal elements
- Include cerebral or subcutaneous infections
- PAS or methenamine silver stain
12
Q
Phaeohyphomycosis treatment (2):
A
- Surgical resection of well-localized lesions
- Amphotericin B, Oral ketoconazole and itraconazole
