B00: Herpesviral [herpes simplex] infections

Herpesviral, or herpes simplex, infections are a group of diseases caused by the herpes simplex virus (HSV). This group of conditions includes oral and genital herpes, both characterized by painful sores and blisters on either the mouth or genital region. The virus is commonly transmitted through direct contact with an infected person, including both sexual and non-sexual contact. Exposure to the virus can occur without visible symptoms, however, once infected, symptoms such as itching, tingling, or burning sensation may precede the appearance of blisters. The infections often follow a cycle of episodes of active disease, when symptoms can be severe, followed by a period without symptoms. The herpes simplex virus remains in the body for life, traveling up nerve cells where it can lie dormant. When a new outbreak occurs, the virus travels back down the nerve to the skin, leading to the appearance of sores.