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ulceromembranous gingivitis --> necrotizing ulcerative gingivitis

An acute or recurrent gingivitis of young and middle-aged adults characterised clinically by gingival erythema and pain, fetid odour, and necrosis and sloughing of interdental papillae and marginal gingiva which gives rise to a gray pseudomembrane; fever, regional lymphadenopathy, and other systemic manifestations also may be present. A fusiform bacillus and treponema vincentii can be isolated from the gingival tissues in large numbers and are felt to play a significant but poorly defined role in the pathogenesis.

Synonym: fusospirochetal gingivitis, trench mouth, ulceromembranous gingivitis, vincent's disease, vincent's infection.