Erythema Multiforme: It is a Hypersensitivity Skin reaction which is caused due to the deposition of immune complex Immunoglobulins IgM in the superficial Blood vessels of the Skin and Oral Mucous membrane. Erythema Multiforme is divided into E.M Minor and E.M Major and is distinct from Steven Johnsons Syndrome. Most common sites for the mucosal [&hellip