Stevens-Johnson syndrome (SJS), also called erythema multiforme major, is a systemic disease mostly involving the skin and mucous membranes. The cutaneous lesions are those of erythema multiforme ...

Erythema multiforme is an immune-mediated reaction that causes a raised, red, target-like rash on the skin or mucous membranes. It often resolves on its own but may require medical treatment.