erythema multiforme Flashcards by Sophia marshall

what is erythema multiforme?

hypersensitivity reaction
triggered by infection
minor and major (mucosal involvement)

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erythema multiforme - features

target lesions
start on back of hands + feet - → torso
upper limbs more
+- mild pruritus

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erythema multiforme - causes

herpes simplex
idiopathic
mycoplasma + strep
drugs eg penicillin, allopuronol, NSAIDs, OCP
CTD
sarcoid
malignancy

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