This infectious disease is caused by fususpirochetal organisms (mostly fusobacterium nucleatum in combination with treponema vincentii, which belong both to the normal flora of the mouth). Its pathology is still unknown but assumed to be associated with poor oral hygiene, smoking, trauma or stress and is predominantly seen in young men. It starts abruptly with fetor ex ore, ulcerative, mostly unilateral tonsillitis with yellow-green coated, sharply defined ulcers. Sometimes it is accompanied by lymphadenopathy or fever but only rarely is the general condition reduced. A visual diagnosis is normally sufficient. Antibiotics like Penicillin G or V are the treatment of choice.