If you think that you might have cold sores it is important that you know about cold sore causes so that you can treat yourself properly and end your outbreak. Cold sores are caused by the herpes simplex virus type 1 and they are very contagious.
In fact once you have caught cold sores you will have them for the rest of your life as they will lay dormant in your system forever, flaring up every now and again. It is when these colds sores that look like small or even medium blisters appear that you are at your most contagious and you should limit contact with others. So any kissing or other skin to skin contact is not advised as it is this that will cause cold sores to passed from one person to another.
People who suffer from cold sores also say that before an episode they will feel a tingling sensation on their lips which is the best cold sore signal. If you feel this it is important that you start to act as though you have the blisters to prevent them from being spread from you to another person, so be aware of how to spot cold sores.
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