It is relatively rare for hsv to incubate for several years. hsv is called herpes simplex virus, there are herpes simplex virus type 1 and herpes simplex virus type 2, the main lesions may appear localized erythema, blisters, itching, accompanied by a distinct burning sensation. The incubation period of herpes simplex virus is usually 2 to 20 days, and rarely can incubate for several years. Herpes simplex virus type I infection mainly causes perioral, nasal, and periocular blisters with itching. Herpes simplex virus type 2, also known as genital herpes virus, causes recurrent blister formation mainly on the genitals. The probability of suspecting herpes simplex virus exposure and remaining free of disease after several years to consider herpes simplex virus infection is greatly reduced. The presence of herpes simplex virus infection requires prompt medical attention.