A positive IgM antibody to herpes simplex virus type 1 indicates infection with this virus. The herpes simplex virus is divided into type 1 and type 2, where type 1 mainly causes herpes simplex in the mouth and type 2 can cause genital herpes. After a herpes simplex virus infection, the body is in a state of chronic infection and there is no way to completely remove this virus for the time being. However, even if the virus causes symptoms in a person, they are usually not particularly severe and only show perioral herpes with pain, and the corresponding condition is mostly self-limiting. If the corresponding condition is more serious or particularly recurrent, it can also be treated with appropriate antiviral drugs. It is also important to improve your immune system. Herpes simplex virus type 1, although mostly causing perioral herpes, can also sometimes cause herpes around the genitals, so the distinction between herpes simplex virus type 1 and type 2 is sometimes not so clear-cut as to the site of infection.