pemphigus erythematosus

noun

pemphigus er·​y·​the·​ma·​to·​sus -ˌer-i-ˌthē-mə-ˈtō-səs 

: a relatively benign form of chronic pemphigus that is characterized by the eruption especially on the face and trunk of lesions resembling those which occur in systemic lupus erythematosus