Follicular eruptions and white lesions in the oral mucosa

Question 1

Pityrosporum folliculitis etiology

Answer 1

caused by Malasezzia furfur (yeast)

Question 2

Pityrosporum folliculitis clinical features

Answer 2

monomorphous papules without comedones
not usually inflammatory
sweaty

Question 3

Pityrosporum folliculitis dx

Answer 3

KOH positive

Question 4

Pseudomonas folliculitis etiology

Answer 4

Hx of hot tub exposure

often more than one person affected

Question 5

Pseudomonas folliculitis clinical features

Answer 5

inflammatory (red) follicular-based papules and pustules

Question 6

Pseudomonas folliculitis dx

Answer 6

culture positive for pseudomonas
self-limited, tx not necessary
hot tub - clean, adjust pH

Question 7

Staphylococcal folliculitis clinical features

Answer 7

inflammatory pustules

Question 8

Staphylococcal folliculitis dx

Answer 8

gram stain and culture positive

Question 9

Oral leukoplakia

Answer 9

white patch/plaque in the mouth that cannot be readily removed
not determined to be any other disease
considered to be a precursor lesion of oral SCC

Question 10

Oral SCC

Answer 10

presents as areas of erythroplakia or leukoplakia

overt malignancy may also show outward proliferation or ulceration

Question 11

Oral candidiasis

Answer 11

raised white patches on oral mucosa and tongue

can be wiped off - revealing a raw, erythematous, and sometimes bleeding base

Question 12

Oral hairy leukoplakia

Answer 12

hyperkeratotic lesion that typically involves the lateral border of the tongue
marker of generalized immunosuppression - usually associated with HIV, or in patients undergoing immunosuppressive therapy following organ transplantation
caused by EBV

Question 13

Lichen planus

Answer 13

common inflammatory dermatosis usually associated with a papulosquamous eruption
presents as bilateral white patches on the buccal/lingual mucosa

Question 14

Frictional keratosis

Answer 14

due to regular friction, mostly from teeth and dentures
typically appears as a thin white line across the side of the cheek
may present as a discrete white patch anywhere in the mouth, but particularly on the gingivae or buccal mucosa

Question 15

Smoker’s keratosis

Answer 15

white keratotic plaque associated with use of smokeless tobacco products
typically located only in areas of direct contact with snuff or chewing tobacco
Reversible when the affected patient quits habit

Question 16

Oral submucous fibrosis

Answer 16

chronic inflammatory condition related to long-term use of betel nut and tobacco
Clinically, lesions may show paleness and/or ulceration of the mucosa

Question 17

Discoid lupus erythematous

Answer 17

Well-demarcated, round or oval, scaly, reddish-purple plaque has a center which becomes atrophied, scarred, and depigmented as the plaque expands

Question 18

White sponge nevus

Answer 18

relatively rare autosomal dominant hereditary condition in which the oral mucosa is white, thickened and folded