Introduction
Cervicofacial actinomycosis is a chronic infection of the head and neck, occurring most often in adult males and caused by bacteria of the genus Actinomyces.
Aetiology of cervicofacial actinomycosis
Actinomyces spp. are part of the normal flora of the oropharynx. The most common pathogen is Actinomyces israelii, a Gram-positive anaerobe with a filamentous branching growth pattern. However, other actinomycetes have been implicated and furthermore many actinomycotic lesions contain ‘companion’ bacteria, including Actinobacillus spp., Prevotella spp. and Fusobacterium spp.
Risk factors for cervicofacial actinomycosis include: