Herpetic gingivostomatitis

Inflammation of the mouth, lips, and gums, often due to herpes infection

Gingivostomatitis is a combination of gingivitis and stomatitis, or an inflammation of the oral mucosa and gingiva. Herpetic gingivostomatitis is often the initial presentation during the first ("primary") herpes simplex infection. It is of greater severity than herpes labialis which is often the subsequent presentations. Primary herpetic gingivostomatitis is the most common viral infection of the mouth.

This keyword could refer to multiple things. Here are some suggestions: