What causes cold sores on your lips?

I know they are a herpes strain, but what causes them to come out? Is it stress, vitamin deficiency, or what?

I get one then it heals and another one pops up at a different spot on my lip. I just want to know what is causing them all to come out now.

Thanks! 10 pts for best answer!

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5 Responses to “What causes cold sores on your lips?”

  1. Angelica D says:

    Stress and maybe you touched your sore adn then another spot on your face without having washed your hands.

  2. urmm1 says:

    It is a viral infection.
    The virus doesn’t do anything when you are at you’re best because all the white blood cells are trying to fight it off
    But when you are feeling run down or ill, all you’re white blood cells are off sorting that out.
    So the virus comes out then :)
    Thats basically it

  3. dr T says:

    Stress is a big trigger for outbreaks, definitely.

    There are some dietary things that can tip the scales toward outbreaks, too… foods high in the amino acid ARGININE, especially.

    Increasing your intake of LYSINE-rich foods to tip the arginine/lysine balance will help to control outbreaks. Here’s a link with some really good info: http://www.suite101.com/article.cfm/living_with_herpes/41149

  4. wayne g says:

    I am sure this is going to sound stupid. It did to me but it WORKED.
    Leave a steel knife, hammer or chisel or something like that out
    overnight. Next morning hold the cold steel to the cold sore, or
    fever blister until the fever is well gone. – The steel should not be below
    freezing -. I would get two or three a year before I tried silly sounding
    remedy. I haven’t had one now in many years. Hope you try it and
    it works for you as well as it did for me.

  5. FF/Paramedic says:

    The herpes virus.

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