Definition of Gingivostomatitis:

Gingivostomatitis is a viral infection of the mouth and gums that causes swelling and sores.

Causes, incidence, and risk factors:

Gingivostomatitis is common, particularly among children. It may occur after infection with the herpes simplex virus type 1 (HSV-1), which also causes cold sores. See: Herpetic stomatitis

The condition may also occur after infection with a coxsackie virus. See: herpangina