Two types exist: herpes simplex virus 1 (HSV-1) and herpes simplex virus 2 (HSV-2). Both can affect your genitals or the area ...

Figure 1. Herpes labialis, seen as painful blister-like lesions on mouth, is caused by infection with HSV. Photo courtesy of Dermatology Online Atlas (DOIA) Erlangen. Figure 2. In HSV infection ...