Definition of Ludwig's angina:

Ludwig's angina is a bacterial infection of the floor of the mouth. It involves swelling that may block the airway.

Causes, incidence, and risk factors:

Ludwig's angina is a type of cellulitis that involves inflammation of the tissues of the floor of the mouth, under the tongue. It often occurs after an infection of the roots of the teeth (such as tooth abscess) or a mouth injury.

This condition is uncommon in children.