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usmle step 3 > dermatology > Flashcards

dermatology Flashcards

1
Q

acanthosis nigricans - assoc w/what 2 diseases?

A
  • DM

- GI malignancy

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2
Q

porphyria cutanea tarda - assoc w/ which dz?

A

hep c

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3
Q

cutaneous leukoclastic vasculitis (palpable purpura) 2/2 cryoglobulinemia - assoc w/which dz?

A

hep c

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4
Q

dermatitis herpetiformis - assoc w/which dz?

A

celiac dz

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5
Q

sudden onset psoriasis, recurrent herpes, disseminated molluscum - assoc w/which dz?

A

HIV

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6
Q

severe seborrheic dermatitis - assoc w/which 2 dz?

A
  • HIV

- parkinson

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7
Q

explosive onset of multiple itchy, seborrheic keratoses - assoc w/which dz?

A

GI malignanct

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8
Q

pyoderma gangrenosum - assoc w/which dz?

A

IBD

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9
Q

tense bullae - which skin dz?

A

bullous pemphigoid

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10
Q

flaccid bullae - which dz?

A

pemphigus vulgaris

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11
Q

rash w/severe itching, assoc w/celiac dz?

A

dermatitis herpetiformis

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12
Q

bullous pemphigoid - tx?

A

topical high-potency steroids (if more severe, need oral)

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13
Q

hypopigmented spots w/fam hx of deafness - dx?

A

NF-2 (autosomal dominant)

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14
Q

hyperpigmented cafe au lait spots - dx?

A

NF-1

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15
Q

what is cause of deafness in NF-1 and NF-2

A

acoustic neuroma

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16
Q

hypopigmented maculae (Ask leaf spots), glial proliferation, several organ hamartomas - dx?

A

tuberous sclerosis

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17
Q

facial port-wine stain and leptomeningeal aniomatosis - dx?

A

Sturge-Weber syndrome

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18
Q

multiple telangiectasias and vascular lesions on CNS - dx?

A

Osler-Rendu-Weber syndrome

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19
Q

cherry red spot on macula on fundoscopic exam - dx?

A

central retinal artery occlusion

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20
Q

common causes of central retinal artery occlusion?

A
  • carotid atherosclerosis
  • cardiac embolism
  • small vessel disease (htn, DM)
  • vasculitis (GCA)
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21
Q

urgent tx of central retinal artery occlusion?

A

LOWER INTRAOCULAR PRESSURE

  • ocular massage
  • anterior chamber paracentesis
  • IV acetazolamide
  • IV mannitol
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22
Q

severe eye pain, vision loss, HA, nausea, vomiting, light halos, dx?

A

acute angle closure glaucoma

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23
Q

acute or subacute vision loss w/tortuous and dilated veins, diffuse hemorrhages, disk swelling, cotton wool spots on exam - dx?

A

central retinal vein occlusion

24
Q

peripheral then central vision loss, then shower of floaters - dx?

A

retinal detachment

25
erythrasma - what is it? what causes it
- superficial skin infection of intertriginous areas (thin, erythematous) - corynebacterium minutissumum
26
tinea cruris - what causes it?
trichophyton rubrum
27
intertrigo - what causes it?
candida
28
ecthyma ganrenosum - what causes it?
pseudomonas aeruginosa
29
mycosis fungoides - what is it?
cutaneous T-cell lymphoma that causes slowly progressive skin lesions (patches, plaques, tumors, erythroderma)
30
pyoderma gangrenosum - what is it?
neutrophilic dermatosis assoc w.IBD or athritis | - start as inflammatory nodules/pustules/vesicles --> evolve into ulcers
31
ecthyma gangrenosum - presentation?
redness, pustule, nonpainful, ruptures, ulcer, necosis of center
32
erythrasma - what is it? what causes it?
infection of intertriginous spaces caused by corynebacterium minutissimum = pruritic, reddish brown, finely wrinkled papules
33
treatment for cutaneous T cell lymphoma?
interferon alpha
34
actinic keratoses - treatment?
fluorouracil
35
pruritic, polygonal, violaceous, papules or plaques on flexural surfaces - dx?
lichen planus
36
dermatomyositis - which antibodies associated?
- anti-RNP - anti-Jo - anti-Mi2
37
dermatomyositis - extramuscular findings?
- interstitial lung dz - dysphagia - myocarditis
38
explosive onset of multiple itchy seborrheic keratoses - dx?
GI malignancy
39
pyoderma gangrenosum - assoc w/what systemic dz?
inflammtory bowel disease
40
sudden onset severe psoriasis - dx?
HIV
41
sudden onset severe seborrheic dermatitis - dx?
HIV
42
lichen planus - associated w/which systemic dz?
hep C
43
porphyria cutanea tarda - assoc w.what systemic dissease?
hep C
44
leukocytoclastic vasculitis - assoc w/what systemic dz?
hep C
45
chalazion - what is it?
granulomatous inflammation of meibomin gland --> pea sized nodule in eyelid
46
rosacea - tx?
- brimodine - if pustular --> topical metronidazole or azalaic acid - if refractory --> oral abx
47
actinic keratoses --> can transofrm into what?
squamous cell carcinoma
48
lichen simplex chronicus - what is it?
thickened excoriated plaques 2/2 persistent scratching and rubbing
49
what use on sensitive areas w/eczema (face, eyelids)?
calcineurin inhibitors (tacrolimus)
50
agents for field therapy for pts with lots of actinic keratoses?
- 5-FU - topical diclofenac - imiquimod
51
"cherry red spot" on fundus exam - dx?
central retinal artery occlusion
52
fundus w/retinal hemorrhages + optic disc edema (blood + thunder) - dx?
central retinal vein occlusion
53
fundus w/vitreous hemorrhage + elevation of retina - dx?
retinal detachment
54
decreased red reflex + visible hemorrhage on fundoscopy - dx?
vitreous hemorrhage
55
monocular vision loss, eye pain, headache, n/v, conjunctival erythema - dx?
acute angle-closure glaucoma
56
monocular vision loss, eye pain that worsens with eye movement - dx?
optic neuritis

usmle step 3 (14 decks)

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