Most common causative agent of erythema multiforme (EM)
Question
What is the most common causative agent of erythema multiforme (EM)?
Options
Option A
Penicillin and sulphonamides
Option B
Systemic lupus erythematosus
Option C
HSV infection
Option D
Malignancy
Correct Option
Option C
Explanation
HSV is the most common etiologic agent of EM, which presents as a targetoid rash and bullae. All the other options are also associated with the disorder, but less commonly.
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