Dental General c3d26826 All are true about erythema multiformis except – A Due to Herpes simples B Due to sulphonamide C Lesion are symmetrical D Mucous membrane is usually involved High-Yield Explanation Mucosal involvement is uncommon (<20%) in erythema multiforme (erythema multiforme minor), where as mucosal involvement is common in TEN-SJS complex.