1|Page
FNP NR511: DIFFERENTIAL DIAGNOSIS MIDTERM
EXAM / CHAMBERLAIN COLLEGE
2025/2026|CERTIFIED EXAM QUESTIONS WITH
CORRECT ANSWERS
Cellulitis risk factors - Correct-answer--lymphatic blockage
-hx recurrent cellulitis
-postmastec
-post-saph vein graft
-HIV/AIDS
-chronic steroids
-chemo
-drug/etoh abuse
-PVD
cellulitis assessment - Correct-answer--tender, warm, erythematous
-usually precipitating condition that "got infected"
-hx lesion or plaque getting progressively larger over several days
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-tender/enlarged nodes poss
-lower leg common (search for tinea pedis or areas of macerated skin in toes)
folliculitis causes - Correct-answer--predisposing factors: DM, obesity, staph
carrier, poor hygiene, immunodef, exposure to chem, chronic skin friction
-long-term tetra therapy
-Gram- colonization and trauma from shaving
-abx use
-wet environments such as whirlpools
-chronic ster
-trauma/damage to hair follicles
-skin occlusion
-drainage from adjacent infections
-acne
furuncles - Correct-answer--boil, deep follicle inf
-Gram + staph
-small, red, indurated nodules, start to develop yellow-colored central plug
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hidradenitis suppurativa - Correct-answer--on axilla
-lesions tender and inflamed
-chronic disease of apocrine glands, severe hypertrophic scarring and sinus tracts
-differentiate from furuncle: numerous hypertrophic scars
furuncle/hidra supp tx - Correct-answer--warm compresses
-I&D
-dicloxacillin, cephalexin, doxy
impetigo assessment - Correct-answer--pruritic lesions
-red, crusty rash
-face or exts
-fever unusual
-plaques begin as vesicles
-roofs of vesicles bd and leave shallow erosions with yellow crust
-lesions discrete or confluent
-poss bullae
-vesicles become pustular in hours
-erosions covered with moist, honey-colored crust
-can be ulcerative
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impetigo teaching - Correct-answer--contagious
-hygiene/fingernails
-refrain from contact sports
-do not return to school until 24h after abx started
-clean crusts with antibac soap, then apply mupirocin or retapamulin
-prompt attention to skin trauma
wart characteristics - Correct-answer--contagious skin lesion
-infected skin keratinocytes caused by HPV
wart assessment - Correct-answer--small bump or group present for weeks,
months
-recurring
-OTC no success
-usually asym except plantar
-can be raised, flat, single, multiple, isolated, clustered
-centrally located caps
FNP NR511: DIFFERENTIAL DIAGNOSIS MIDTERM
EXAM / CHAMBERLAIN COLLEGE
2025/2026|CERTIFIED EXAM QUESTIONS WITH
CORRECT ANSWERS
Cellulitis risk factors - Correct-answer--lymphatic blockage
-hx recurrent cellulitis
-postmastec
-post-saph vein graft
-HIV/AIDS
-chronic steroids
-chemo
-drug/etoh abuse
-PVD
cellulitis assessment - Correct-answer--tender, warm, erythematous
-usually precipitating condition that "got infected"
-hx lesion or plaque getting progressively larger over several days
,2|Page
-tender/enlarged nodes poss
-lower leg common (search for tinea pedis or areas of macerated skin in toes)
folliculitis causes - Correct-answer--predisposing factors: DM, obesity, staph
carrier, poor hygiene, immunodef, exposure to chem, chronic skin friction
-long-term tetra therapy
-Gram- colonization and trauma from shaving
-abx use
-wet environments such as whirlpools
-chronic ster
-trauma/damage to hair follicles
-skin occlusion
-drainage from adjacent infections
-acne
furuncles - Correct-answer--boil, deep follicle inf
-Gram + staph
-small, red, indurated nodules, start to develop yellow-colored central plug
,3|Page
hidradenitis suppurativa - Correct-answer--on axilla
-lesions tender and inflamed
-chronic disease of apocrine glands, severe hypertrophic scarring and sinus tracts
-differentiate from furuncle: numerous hypertrophic scars
furuncle/hidra supp tx - Correct-answer--warm compresses
-I&D
-dicloxacillin, cephalexin, doxy
impetigo assessment - Correct-answer--pruritic lesions
-red, crusty rash
-face or exts
-fever unusual
-plaques begin as vesicles
-roofs of vesicles bd and leave shallow erosions with yellow crust
-lesions discrete or confluent
-poss bullae
-vesicles become pustular in hours
-erosions covered with moist, honey-colored crust
-can be ulcerative
, 4|Page
impetigo teaching - Correct-answer--contagious
-hygiene/fingernails
-refrain from contact sports
-do not return to school until 24h after abx started
-clean crusts with antibac soap, then apply mupirocin or retapamulin
-prompt attention to skin trauma
wart characteristics - Correct-answer--contagious skin lesion
-infected skin keratinocytes caused by HPV
wart assessment - Correct-answer--small bump or group present for weeks,
months
-recurring
-OTC no success
-usually asym except plantar
-can be raised, flat, single, multiple, isolated, clustered
-centrally located caps
