Signs, Symptoms, and Diagnosis
Primary infection occurs most often in children, exhibiting vesicles and erosions on reddened buccal mucosa, the palate, tongue or lips (acute herpetic gingivostomatitis) (Fig. 15).
Herpes labialis, (fever blisters or cold sores) appears as grouped vesicles on red denuded skin, usually the vermilion border of the lip; infection represents reactivated HSV.