What triggers your cold sores?

Cold sores are caused by the herpes simplex virus. Once this virus is in you, it can cause outbreaks of cold sores. Cold sore outbreaks are often triggered by exposure to hot sun, cold wind, a cold or other illness, a weak immune system, changing hormone levels, or even stress.

Are cold sores a form of STD?

Having a cold sore does not necessarily mean you have an STD. Most cold sores are caused by herpes simplex virus type 1 (HSV-1), which usually affects the lips and typically is not transmitted by sexual contact. Though less common, cold sores may be caused by another type of herpes simplex virus called HSV-2.

How long is a cold sore contagious?

How long are cold sores contagious for? Cold sores, caused by a type of virus called herpes simplex type 1, are contagious until they completely go away, which usually takes about two weeks. Cold sores are the most contagious when fluid seeps out of the sores.

Why do I get a cold sore right before my period?

Hormonal changes The rise and fall of hormones during a natural menstrual cycle can be a cause of cold sores, too. Cold sores are often experienced just before or during your period as a result of the hormonal changes.

What should I do if I kiss someone with a cold sore?

In general, it’s best to wait until after the scabs and sores completely disappear before you kiss someone or engage in oral sex. This is because the herpes virus can continue shedding in the late stages of a cold sore healing, even if there’s no viral fluid present.

What causes cold sores on lips?

Cold sores are sometimes called oral herpes because they are caused by the herpes simplex virus type 1 (HSV-1). This virus is very common and highly contagious. It spreads through saliva or close contact — often through kissing or by sharing utensils, straws, towels or lip balm with someone who has a cold sore.

What vitamin deficiency causes cold sores?

Vitamin B deficiency has been linked with cold sore outbreaks.