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.
Review Date 12/10/2015
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, Boston, MA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.