Cold Sores & Fever Blisters

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WHAT CAUSES THE VIRUS TO BECOME ACTIVE?
Any infection, such as a cold, can prompt the virus to show itself. It is easier for the virus to become active when your immune system (your body’s natural defense) is weakened by another illness....

...Cold sores (Fever blisters)What are they?

...People who have had one bout with the virus will recognize the early warning signs, if it comes back. They will feel he burning or stinging or itching where they had blisters or cold sores before....

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