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Microbiology 2ndsem Prelim > Superficial Mycoses > Flashcards

Superficial Mycoses Flashcards

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Biology 101 flashcards
1
Q

PV is lipophilic because it is found in areas rich in?

A

Sebaceous gland

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2
Q

PV etiology

A

Malassezia furfur

Pityrosporum orbiculare

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3
Q

Pityriasis vesicolor epidemiology

A 
Both sexes
Worldwide
All races
Tropic and subtropic
Temperate climates
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4
Q

Pityriasis vesicolor clinical manifestations

Normal pigmentation of patients skin

A

Dark skin - hypo pigmentation

Light skin - hyper pigmentation

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5
Q

Pityriasis vesicolor clinical manifestations

Colors

A

Fawn
Yellow- brown
Dark brown patches

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6
Q

Pityriasis vesicolor clinical manifestations

Scaling

A

May or may not

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7
Q

Pityriasis vesicolor clinical manifestations

Commonly involves

A

Chest
Trunk
Abdomen

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8
Q

Pityriasis vesicolor clinical manifestations

In chronic infections

A

Hypopigmented young lesions

Hyper pigmented older lesions

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9
Q

Pityriasis vesicolor clinical manifestations

Acriform pityriasis Folliculitis

A

More severe
Large number
Around hair follicle

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10
Q

Pityriasis vesicolor clinical manifestations

Lesion starts as multiple tiny?

A

Macula spots

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11
Q

Pityriasis vesicolor clinical manifestations

Enlarge if

A

Coalesce

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12
Q

Pityriasis vesicolor clinical manifestations

Fungus may colonize the lacrimal sac and obstruction may develop?

A

Dacryoliths

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13
Q

Pityriasis vesicolor clinical manifestations

Inflammation interfere with tearing

A

Dacryocystist

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14
Q

Pityriasis vesicolor clinical manifestations

Follicle become dilated and plugged and contain

A

Keratinous debris

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15
Q

Pityriasis vesicolor differential diagnosis

Non infectious condition in which loss of cells that give color to the skin (melanocytes)
Result to smooth, white patches in midst of normally pigmented skin

A

Vitiligo

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16
Q

Pityriasis vesicolor differential diagnosis

Ringworm of the body

A

Tinea circinata

17
Q

Pityriasis vesicolor differential diagnosis

Inflammatory disease of the skin
Scaly lesions usually on the scalp, hairline and face

A

Seborrheic dermatitisw

18
Q

Pityriasis vesicolor differential diagnosis

Slightly raised, scaly edged round or oval pink copper colored spots on the trunk and upper arms.

A

Pityriasis rosea

19
Q

Pityriasis vesicolor differential diagnosis

Brown scaly skin patches caused by corynebacterium minutissimum

A

Erythrasma

20
Q

Pityriasis vesicolor differential diagnosis

Depigmentation of skin
Caused by treponema carateum

A

Pinta

21
Q

Pityriasis vesicolor diagnosis

A

Skin scrapping
10% KOH- spaghetti and meat ball appearance
Wood lamp
Culture

22
Q

Pityriasis vesicolor treatment

A

Keratolytic agents - Whitfields ointment or salicylic acid
25% sodium thiosulfate + 1% salicylic acid
Miconazole- antifungal
Selenite disulfide (not available in Phil’s)

23
Q

Tinea Nigra

Also known as

A

Keratomycosis nigricans

24
Q

Tinea Nigra

More common in

A

Younger age group

Female

25
Q

Tinea Nigra

Etiology

A

Exophiala wernickii

26
Q

Tinea Nigra clinical manifestations

PUNDS

A 
Palmar and plantar
Usually single lesion
No inflammation no pruritic
Dark pigmentation
Start as light brown macule

Centrifugally darkens

27
Q

Tinea Nigra

Differential diagnosis

A 
Malignant melanoma
Junctional nevus
Addison's disease
Contact dermatitis
Staining due to chemical and dyes
28
Q

Tinea Nigra diagnosis

A

10% KOH

2 celled yeast ANNELICONIDIA

29
Q

Fungal infection of hair shaft

A

Piedra

30
Q

May table ang difference ng white at dark piedra. Hanapin at aralin

A

Nasa trans

31
Q

Pityriasis vesicular usually asymptomatic infection of which part of the skin?

A

Stratum corneum

Microbiology 2ndsem Prelim (5 decks)

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