Symptom Checker - Erythema Multiforme 

​Differential diagnosis of erythema multiforme are :
-drug eruption 
-secondary syphilis 
-chronic urticaria 
-contact dermatitis 
-serum sickness
-lichen planus 
-pemphigus vulgaris
-pityriasis rosea
-granuloma annulare
-viral exanthem 
-polymorphic light eruption