Superficial Mycoses Flashcards
PV is lipophilic because it is found in areas rich in?
Sebaceous gland
PV etiology
Malassezia furfur
Pityrosporum orbiculare
Pityriasis vesicolor epidemiology
Both sexes Worldwide All races Tropic and subtropic Temperate climates
Pityriasis vesicolor clinical manifestations
Normal pigmentation of patients skin
Dark skin - hypo pigmentation
Light skin - hyper pigmentation
Pityriasis vesicolor clinical manifestations
Colors
Fawn
Yellow- brown
Dark brown patches
Pityriasis vesicolor clinical manifestations
Scaling
May or may not
Pityriasis vesicolor clinical manifestations
Commonly involves
Chest
Trunk
Abdomen
Pityriasis vesicolor clinical manifestations
In chronic infections
Hypopigmented young lesions
Hyper pigmented older lesions
Pityriasis vesicolor clinical manifestations
Acriform pityriasis Folliculitis
More severe
Large number
Around hair follicle
Pityriasis vesicolor clinical manifestations
Lesion starts as multiple tiny?
Macula spots
Pityriasis vesicolor clinical manifestations
Enlarge if
Coalesce
Pityriasis vesicolor clinical manifestations
Fungus may colonize the lacrimal sac and obstruction may develop?
Dacryoliths
Pityriasis vesicolor clinical manifestations
Inflammation interfere with tearing
Dacryocystist
Pityriasis vesicolor clinical manifestations
Follicle become dilated and plugged and contain
Keratinous debris
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
Vitiligo
Pityriasis vesicolor differential diagnosis
Ringworm of the body
Tinea circinata
Pityriasis vesicolor differential diagnosis
Inflammatory disease of the skin
Scaly lesions usually on the scalp, hairline and face
Seborrheic dermatitisw
Pityriasis vesicolor differential diagnosis
Slightly raised, scaly edged round or oval pink copper colored spots on the trunk and upper arms.
Pityriasis rosea
Pityriasis vesicolor differential diagnosis
Brown scaly skin patches caused by corynebacterium minutissimum
Erythrasma
Pityriasis vesicolor differential diagnosis
Depigmentation of skin
Caused by treponema carateum
Pinta
Pityriasis vesicolor diagnosis
Skin scrapping
10% KOH- spaghetti and meat ball appearance
Wood lamp
Culture
Pityriasis vesicolor treatment
Keratolytic agents - Whitfields ointment or salicylic acid
25% sodium thiosulfate + 1% salicylic acid
Miconazole- antifungal
Selenite disulfide (not available in Phil’s)
Tinea Nigra
Also known as
Keratomycosis nigricans
Tinea Nigra
More common in
Younger age group
Female
Tinea Nigra
Etiology
Exophiala wernickii
Tinea Nigra clinical manifestations
PUNDS
Palmar and plantar Usually single lesion No inflammation no pruritic Dark pigmentation Start as light brown macule
Centrifugally darkens
Tinea Nigra
Differential diagnosis
Malignant melanoma Junctional nevus Addison's disease Contact dermatitis Staining due to chemical and dyes
Tinea Nigra diagnosis
10% KOH
2 celled yeast ANNELICONIDIA
Fungal infection of hair shaft
Piedra
May table ang difference ng white at dark piedra. Hanapin at aralin
Nasa trans
Pityriasis vesicular usually asymptomatic infection of which part of the skin?
Stratum corneum
