OverviewActinomycosis (lumpy jaw) is caused by a bacteria introduced to face tissues by trauma, surgery or infection. Long term treatment with antibiotics is often required.
Update Date 11/20/2013
Updated by: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.