3 ways to treat cold sores

3 ways to treat cold sores.
Stop a cold sore in its tracks with these products and treatments.

If you get cold sores, you know the drill: an itchy, tingling sensation that turns into an unsightly blister within hours. (Of course, they usually sprout at the worst moments’like just before a special occasion, or on a vacation.)

What causes cold sores?
‘Cold sores are caused by the herpes simplex virus type 1, which is transmitted by skin-to-skin contact and may lie dormant for months,’ says Dr. Jaggi Rao, an Edmonton-based dermatologist and associate clinical professor of dermatology at the University of Alberta. But an outbreak can be triggered by stress, a fever or even menstruation. And although cold sores can strike at any time of year, sunlight encourages flare-ups because UV exposure weakens the immune system and allows the virus to multiply.
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