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Fever blisters and cold sores are caused by a virus called oral herpes. Different things can trigger break outs like being out in very hot or very cold weather for long periods of time or being run down by stress / illness.

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11y ago
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13y ago

Fever blisters are caused by the herpes virus.

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Q: What causes fever blisters?
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Related questions

What are fever bumps or blisters?

Fever bumps / blisters are caused by the same contagious virus that causes cold sores which is oral herpes (HSV!).


What kind of herpeswhich one causes fever blisters?

If you are fighting a virus or if you have a cold you might get a fever blister.


Do you get fever blisters from boys?

You can get fever blisters from boys or girls.


Can working out cause fever blisters?

Working out won't cause fever blisters.


Where can herpes or fever blisters occur in the body?

This disease, also known as oral herpes or fever blisters, can occur anywhere on the body.


What can you eat when you have fever blisters?

fever muffin


Do Prednisone pills help fever blisters?

Prednisone pills won't help fever blisters. Actually, prednisone pills would likely make fever blisters worse because prednisone suppresses the immune system, which delays the return to latency for the virus causing the fever blisters.


What is fever blisters?

Fever blisters are cold sores, on or near the lips, caused by the oral herpes virus HSV-Type1.


What are fever blisters caused from?

A fever does not cause fever blisters, just like a cold doesn't cause cold sores (they are the same thing) but if infected with the Herpes Simplex I virus, a person's immune system is compromised and the virus can come out of its dormant stage. Too much sun, stress, certain foods, suppressed immune system are a few of the predisposing factors that can bring the Herpes Simplex Virus I out of its dormant stage. Remember once you have the virus, you will always have it. There is no cure.


Are fever blisters herpes?

Yes, they are a form of this viral family, and highly contaigious.This is Herpes Simplex.


Can chlorine help fever blisters?

yes


How long Does fever blisters last?

A fever blister will last about 2 weeks.