What causes a fever sore on the lips?
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 infections are contagious. 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 transmitting the virus. People are most contagious when they have active blister-like sores. Once the blisters have dried and crusted over (within a few days), the risk of contagion is significantly lessened. However, a person infected with HSV can pass it on to another person even when a cold sore is not present. This is because the virus is sometimes shed in saliva even when sores are not present. Despite popular myth, it is almost impossible to catch herpes (cold sores) from contaminated surfaces, towels, or washcloths.
Alot of things actually. If you get sick you can get them. They ARE called fever blisters. You can also get them if you get stressed. I actually get them when i eat tomatoes. Its not that I’m allergic to tomatoes but the acid in the tomotoes are what causes them. If I eat acid less tomatoes I don’t get them. It could be certain foods that you eat. Also- in worse case- you could have herpes of the mouth. Keep in mind that ALOT of people get them. If you go to wal*mart and buy Abreva it is actually the fastess healing for them.
