Herpes simplex type 1 positivity generally refers to positive herpes simplex virus type 1 antibodies, suggesting that the patient has had a previous herpes simplex virus type 1 infection or is in the active stage of herpes simplex virus type 1. Herpes simplex virus type 1 antibodies are categorized into IgG and IgM antibodies. Of these, a positive herpes simplex virus type 1 IgG antibody indicates that the patient has had a previous infection and can usually be left alone. On the other hand, a positive herpes simplex virus type 1 IgM antibody indicates that the patient has had a recent infection or a recurrence of a previous infection and requires treatment. People who are positive for herpes simplex virus type 1 IgM antibodies need to be treated with antiviral medications, such as acyclovir and valacyclovir, as prescribed by their doctor. Usually, herpes simplex virus type 1 IgM antibody will return to negative after active treatment and cure. It is recommended that herpes simplex virus type 1 antibody-positive patients undergo further examination and treatment under the supervision of a doctor.