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Rapid DDx > Rapid DDx: Derm > Flashcards

Rapid DDx: Derm Flashcards

1
Q

Comedones

few papules/pustules

A

mild acne vulgaris

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2
Q

comedones

moderate amount of papules/pustules

A

moderate acne vulgaris

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3
Q

nodular/cystic lesions > 5 mm seen on face, back, chest or upper arms

A

severe acne vulgaris

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4
Q

Woman 30-50 yo

hx of etoh, hot drinks, hot baths, hot food, sun exposure

papulopustules

centrofacial erythema, flushing

telangiectasias

skin coursening with burning and stinging

no comedones

A

rosacea

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5
Q

male pt.

perifollicular papules/pustules

erythema on hair bearing skin

itchy rash

A

folliculitis

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6
Q

20-40 yo hx of HSV

Hx of sulfa use, beta lactams, phenytoin, phenobarbitol

target lesions with dusky central area on extremities and trunk

red inflammatory zone surrounded by pale ring of edema

erythematous halo on periphery of lesion

NEG Nikolsky

A

erythema multiforme

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7
Q

Hx new med use

initial fever/URI sxs

widespread flaccid bullae which started on trunk and face

involvement of 1 or more mucous membranes

POS Nikolsky

Extremely pruritic and painful

A

SJS

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8
Q

Hx autoimmune d/o

smooth, discrete, circular patches of complete hair loss

painless, non-pruritic

onset over period of weeks

nail changes

A

alopecia areata

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9
Q

Gradual onset hair loss/thinning

non-scarring

began as bitemporal thinning at frontal scalp

A

aldrogenetic alopecia

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10
Q

opaque, thick, discolored and cracked nail on great toe.

A

onychomycosis

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11
Q

hx biting nails

rapid development of painful, red, swollen area around nail folds

A

paronychia (staph areus)

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12
Q

Hx of splinter/cuticle damage

severe, throbbing pain, erythema, swelling, fluctuance to pad of fingertip

A

felon

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13
Q

visualization of spider at site of skin changes

burning and erythema for 3-4 hours followed by skin blanching

red halo appeared for 24-72 hours followed by hemorrhagic bulla with eschar

fever, chills, N/V

Morbilliform rash

A

Brown Recluse bite

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14
Q

visualization of spider at site of skin changes

pain at the bite site with muscle pain, spasms, rigidity within 30 minutes-2 hours

central punctum o a blanched circular patch with surrounding red perimeter

A

black widow bite

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15
Q

Child < 10 yo

erythematous malar rash on sides of face with circumoral pallor

lacy rash developed on upper extremities a few days after face rash appeared.

No rash on palms or soles

A

erythema infectiosum (Fifths Disease)

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16
Q

Sick contact

started with high fever with cough, stuffy/runny nose, red eye with d/c

small white spots on erythematous base appeared on buccal mucosa

48 hours later morbilliform/maculopapular brick red rash that began at the hairline and spread down the body

A

Rubeola (measles)

17
Q

Child < 5 yo, summertime

sudden onset fever, URI, anorexia

painful oral vesicles surrounded by erythema that undergo ulceration

vesicular, macular, papular lesions on distal extremities

not pruritic or painful

A

hand, foot, and mouth disease

18
Q

child 3-10 yo, early fall

sudden onset high fever

small papulovesicular lesions on the posterior pharynx that turn to ulcers

anorexia due to pain

malaise, headache, vomiting

A

herpangina

19
Q

Hx of wound to extremity

localized macular erythema

not sharply demarcated border

swelling, warmth, tenderness of affected area

no systemic sxs

A

Cellulitis

20
Q

intensely erythemetous rash

raised, sharply demarcated border

rash on lower extremity

systemic sxs like fever, chills

A

erysipelas

21
Q

Hx cellulitis

red, tender streaks coming from site of cellulitis

lymphadenitis of nodes near site

A

lymphangitis

22
Q

erythematous, tender, indurated nodule with fluctuance

may have central plug

no systemic sxs

A

furuncle/carbuncle

23
Q

child 2-6 yo

papules, vesicles, pustules with drainage and developing golden crust

occurs on face

regional LAD

A

nonbullous impetigo

24
Q

child 2-6 yo

rapidly forming of large bullae and varnish like crust

fever and diarrhea

A

bullous impetigo

25
Q

ulcerative lesion that almost appears like a cigarette burn

A

ecthyma impetigo

26
Q

immunodeficient patient

patches of alopecia with black dots

A

tinea capitis

27
Q

preadolescent patient living in crowded condition

scaly patch with alopecia

A

tinea capitis

28
Q

immunocompromised preadolescent patient

inflammatory plaque with pustules on scalp

thick crusting

painful

A

kerion

29
Q

adolescent male patient

pruritic, erythematous erosions and scales between third and fourth digital interspaces

A

tinea pedis

30
Q

pruritis in intertrigonous region of groin

annular patches/plaques with diffuse erythema

sharply demarcated raised border with satellite vesicles

sparing of scrotum/mucosa

A

tinea cruris

31
Q

Hx of contact sports, adolescent male

pruritic oval plaque with central clearing and well-defined, raised borders

spread outwardly

A

tinea corporis

32
Q

Obese patient with DM

erythematous, beefy red macerated plaque to inguinal fold

erythematous satellite lesions

pruitic and painful

A

intertrigo

33
Q

intense nighttime pruritis with small papules and linear streaks in the web spaces

no involvement of neck or face

A

scabies

34
Q

Adult, sexually active male

intense pruritis with red papules on the scrotum

worse at night

A

scabies

35
Q

Female, 3-12 yo

pruritis of the scalp

not better or worse at night

dandruff looking flakes on hair

A

pediculosis

36
Q

Child

Hx of summer camp

multiple dome-shaped flesh colored waxy looking papules

2-5 mm with central umbilication

A

molluscum contagiosum

37
Q

firm, hyperkeratotic papule

1-10mm in size

red/brown dots inside lesion

occurs on hand

A

common/plantar wart

38
Q

numerous small but discrete flesh colored papules

1-5mm in diameter, 1-2 mm in height

found on face and shins

A

flat warts

39
Q

started as small painless papules on genitals

evolved to soft, fleshy, cauliflower like lesions

A

condyloma acuminata

Rapid DDx (3 decks)

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