What is true of herpes simplex 1?

Herpes simplex virus type 1 (HSV-1) is best known for causing fever blisters or cold sores. These painful and sometimes itchy lesions typically appear on or around the lips but can also manifest in other areas of the face or oral cavity. The virus is primarily transmitted through direct contact, such as kissing or sharing utensils, making it a common viral infection.

While HSV-1 can sometimes lead to more severe conditions, such as herpetic keratitis affecting the eyes, its most recognizable symptom remains the characteristic cold sores. Understanding that HSV-1 does not relate to bacterial infections or forms of eczema helps clarify its classification as a viral infection. Additionally, the contagious nature of HSV-1 through skin-to-skin contact serves to reinforce its commonality in infection rates.