shin lesions Flashcards

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1
Q

differential diagnosis of shin lesions includes ?

A

erythema nodosum
pyoderma gangrenosum
preitibial myxoedema
necrobiosis lipoidica diabeticorum

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2
Q

clinical features of erythema nodosum

A

symmetrical,
erythematous,
tender,
nodules
which heal without scarring

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3
Q

common cause of erythema nodosum ?

A

strep infections
tuberculosis

sarcoidosis
inflammatory bowel diseases
Behcet’s

and drugs
penicillins / sulphonamides
combined oral contraceptive pill

pregnancy

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4
Q

clinical features of Pretibial myxoedema

A

symmetrical, erythematous lesions
shiny orange peel skin

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5
Q

common cause of pretibial myxoedema ?

A

graves disease

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6
Q

clinical feature of pyoderma gangrenosusm ?

A

Initially small red papule
later deep, red, necrotic ulcers with a violaceous border

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7
Q

cause of pyoderma gangrenosusm ?

A

50 percent idiopathic
seen in IBD - ulcerative colitis and myeloproliferative disorders

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8
Q

clinical features of Necrobiosis lipoidica diabeticorum

A

shiny, painless areas of yellow/red skin typically on the shin of diabetics
often associated with telangiectasia

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