“…Twenty to 30 years ago, there were a number of reports of patients presenting with a sudden onset of painful, erythematous gingivae, which when biopsied were shown to have a dense, polyclonal, plasmacytic infiltrate in the connective tissue 1 , 2 . This condition was known by a variety of terms, particularly plasma cell gingivitis, 3 , 4 and, at least in some instances, resolved after the withdrawal of allergens 4 , 5 .…”