Classification: ICD-9 528.1; ICD-10 A69.0

Syndromes and synonyms: Cancrum oris, gangrenous stomatitis

Agent: Oral commensal bacteria such as Fusobacterium necrophorum, F. nucleatum and a spirochete (formerly identified as Borrelia vincenti) are the suspected etiological agents.

Reservoir: Human buccal flora.

Transmission: Noma is an opportunistic infection with endogenous buccal flora.

Incubation period: Days to weeks.

Clinical findings

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