Actinomycosis is a rare infectious bacterial disease caused by Actinomyces species. About 70% of infections are due to either Actinomyces israelii or A. gerencseriae. Infection can also be caused by other Actinomyces species, as well as Propionibacterium

Actinomycosis is a bacterial infection that occurs most often in the face and neck. Symptoms of actinomycosis include a neck mass, jaw or face pain, and formation of pockets of pus (abscess). When actinomycosis occurs in other parts of the body, symptoms

Actinomycosis is a rare infection, especially in the United States. Since the infection spreads so slowly, actinomycosis was first thought to be a fungal infection.