Fungal Skin Infection

Question 1

Skin fungal infections types?

Answer 1

Superficial/Cutaneous/Subcutaneous

Question 2

Superficial infection types?

Answer 2

tinea versicolor, piedra,

and tinea nigra;

Question 3

Cutaneous infection types?

Answer 3

Dermatophytosis,

Candidiasis of skin ,mucosa, and nails and others

Question 4

Subcutaneous infection types ?

Answer 4

mycetoma,
sporotrichosis,
chromoblastomycosis

Question 5

? infections in which a pathogen is restricted to the
stratum corneum, with little or no tissue reaction or invasion.

Answer 5

Superficial Mycoses

Question 6

affect the uppermost layers of skin or hair shaft. ?

Answer 6

Superficial Mycoses

Question 7

painless and usually do not provoke the immune
system
?

Answer 7

Superficial Mycoses

Question 8

long-term (chronic) fungal infection of the skin with ➢Patches of brown or discolored skin with sharp borders and fine scales.

?

Answer 8

Superficial Mycoses 1-Tinea Versicolor

Question 9

The most common sites:
the back, underarms, upper arms, chest, and neck
Type?

Answer 9

Superficial Mycoses 1-Tinea Versicolor

Question 10

Affected areas do not darken in the sun
There may be loss of skin color (hypopigmentation) or an increase in skin
color (hyperpigmentation).
Asymptomatic

Type?

Answer 10

Superficial Mycoses 1-Tinea Versicolor

Question 11

Malassezia furfur

Etiology of?

Answer 11

Superficial Mycoses 1-Tinea Versicolor

Question 12

a Yeast, Lipophilic Normal flora of skin

?

Answer 12

Malassezia furfur

Question 13

Superficial Mycoses 1-Tinea Versicolor

Diagnosis ?

Answer 13

1. Skin scraping using ( KOH)

2. Culture

Question 14

Skin scraping of Tinea Versicolor how?

Answer 14

KOH

+ for short hyphae and thigh walled round , budding yeast-like cells ( spaghetti and meatballs )

Question 15

Painless patches with brown or black color ➢ Usually located on palm of hand or sole of foot.
Type?

Answer 15

Superficial Mycoses

2-Tinea nigra

Question 16

Etiology of?

Hortaea werneckii Dematiaceous filamentous fungus

Answer 16

Superficial Mycoses

2-Tinea nigra

Question 17

Laboratory Diagnosis of Superficial Mycoses
2-Tinea nigra
?

Answer 17

• Skin scrapings

- Culture on SDA & Mycobiotic

Question 18

Asymptomatic infection of thr hair shaft, nodules on hair shaft on scalp hair/ mustache or beard
Type?

Answer 18

Superficial Mycoses

3-Piedra

Question 19

Dark pigmented nodules, hard and firm attached to hair shaft ? Etiology?

Answer 19

Black piedra / piedraia Hortae

Question 20

Lightly pigmented, white to brown nodules, soft , loosely attached ? Etiology ?

Answer 20

White piedra/ trichosporon biegelli ( yeast )

Question 21

trichosporon biegelli ( yeast) etiology of?

Answer 21

White piedra

Question 22

piedraia Hortae

Etiology of ?

Answer 22

Black piedra

Question 23

Superficial Mycoses
3-Piedra
Lab diagnosis ?

Answer 23

Hair with nodule

• direct microscopy
• culture : SDA and myobiotic agar

Question 24

Treatment of Superficial infections?

Answer 24

• ketoconazole

- nizoral shampoo

Question 25

Fungal infections of the Keratinized tissues of the body ?

Answer 25

DERMATOPHYTOSES

Question 26

Scalp, glabrous skin, and nails caused by a closely related group of fungi known as ?

Answer 26

Dermatophytoses

Question 27

Contagious?

Answer 27

Dermatophytoses

Question 28

Tinea or ring worms? + eg?

Answer 28

Dermatophytoses/ t capitis = scalp

Question 29

Microsporum | Etiology of? Infection of?

Answer 29

Dermatophytoses/ nails hair and skin

Question 30

Epidermophyton

Answer 30

Dermatophytoses/ nails hair and skin

Question 31

Trichophyton

Answer 31

Dermatophytoses/ nails hair and skin

Question 32

Presentations of? | Non-inflammatory ‘black dot’ type Pustular Inflammatory

Answer 32

Tinea Capitis

Question 33

Morphology of lesion Broken hairs, black dots, localized. | Diagnosis of?

Answer 33

Tinea Capitis

Question 34

Woods Lamp Blue green. ● Hair Shaft Exam Endo/Exothrix ● Culture Diagnosis of ?

Answer 34

Tinea Capitis

Question 35

treat hair follicle • Topical , but might be not effective • Systemic agents •Griseofulvin. •Terbinafine. •Treat until no visual evidence, culture (-)… plus 2 weeks?

Answer 35

Tinea Capitis Treatment

Question 36

Typically begins at distal nail corner Thickening and opacification of the nail plate Nail bed hyperkeratosis Onycholysis ?

Answer 36

Onychomycosis

Question 37

Often accompanying tinea pedis?

Answer 37

Onychomycosis

Question 38

Diagnostic Tests of Onychomycosis

Answer 38

➢ KOH Preparations ■ Skin ■ Nails ■ Hair Fungal Cultures Sabouraud dextrose Agar (SDA) DTM (Dermatophyte Test Medium) Growth of fungi and color change from Yellow to red is (+).

Question 39

Dermatophytoses Treatment?

Answer 39

B Topical or systemic ● Griseofulvin ● Terbinafine (Lamisil) ● Azoles Miconazole (Daktrin), Clotrimazole (Canesten) Systemic Itraconazole - others