HPV infection on the mouth is actually herpes labialis, which is a herpes that occurs on the lips, with prodromal symptoms of mild itching or discomfort at first, some even have a burning or stinging sensation, about 1-2 days will appear edematous erythema, and soon the erythema will be based on clusters of small pinpoint or rice-grain sized blisters, with very thin walls and clear fluid, some of which will soon Some of them will soon break down, forming vesicles and ooze and then scabs. Usually the scab will heal in about 7 days, and the scab will fall off without leaving any trace, some patients may be temporarily left with pigmentation, the whole course of the disease takes about 1-2 weeks.