What are the causes of a cold sore
Causes. Cold sores are caused by certain strains of the herpes simplex virus (HSV). HSV-1 usually causes cold sores. HSV-2 is usually responsible for genital herpes. However, either type can cause sores in the facial area or on the genitals. Cold sores are caused by the herpes simplex viruses; the most common cause of sores around the mouth is herpes simplex type 1, or HSV-1. Much less commonly, cold sores may be caused by HSV-2 (herpes simplex type 2), which may result from having oral sex with a person who has genital herpes. Cold sores are usually caused by type I. Herpes simplex is a contagious oral virus. The virus is spread from person to person by kissing or other close contact with sores or even from contact with apparently normal skin that is shedding the virus. Infected saliva is also a means of spreading the virus. Cold Sore Causes. The virus that causes cold sores is known as the herpes simplex virus (HSV). There are two types of HSV, type I and type II. Cold sores are usually caused by type I. Herpes simplex is a contagious oral virus. Cold Sore Causes. The virus that causes cold sores is known as the herpes simplex virus (HSV). There are two types of HSV, type I and type II. Cold sores are usually caused by type I. Cold sores are caused by certain strains of the herpes simplex virus (HSV). HSV-1 usually causes cold sores. HSV-2 is usually responsible for genital herpes. Cold sores are caused by the herpes simplex virus (HSV) . There are two types of herpes simplex virus: HSV-1 and HSV-2. Both virus types can cause sores around the mouth (herpes labialis) and on the genitals (genital herpes). Causes. Cold sores are caused by certain strains of the herpes simplex virus (HSV). HSV-1 usually causes cold sores. HSV-2 is usually responsible for genital herpes. Causes of cold sores. Cold sores are usually caused by the herpes simplex virus type 1 (HSV-1). In most cases, the virus is passed on in early childhood – for example, when a child is kissed by a family member or friend with a cold sore. Cold sores are caused by certain strains of the herpes simplex virus (HSV). HSV-1 usually causes cold sores.
HSV-1