Actinomycosis of the lip is very rare. This report describes a case of actinomycosis affecting the lower lip. A 43-year-old man presented with a swelling of the right side of the lower lip. Incision with drainage was performed to treat the abscess. Drusen was found in the pus. The histopathological diagnosis was actinomycosis. The patient received 750mg LAPC three times daily for 40 days. Subsequently, the condition completely resolved.
