Cold sores are also known as oral herpes. They’re usually caused by the herpes simplex virus type 1 (HSV-1), but sometimes caused by herpes simplex virus type 2 (HSV-2). Cold sores can be spread through person-to-person contact, such as kissing or oral sex.
Cold sores usually pass through a couple stages.
Usually the first time someone has an outbreak, it is worse than future outbreaks. They may experience flu-like symptoms like a fever, body aches, or swollen glands, in addition to the blisters.
People can experience repeated outbreaks of cold sores. So, if you notice any of these symptoms, we recommend that you see your doctor who can examine for oral herpes.