By Dr. Richard Thomas
It’s prime time for cold sores
Although we tend to associate cold sores with the winter season of colds and flus, they actually crop up more often during the summer months. Sun exposure weakens the immune system, which allows the herpes virus responsible for cold sore outbreaks to multiply. Too much sun and heat can also lead to dry lips, which are more prone to injury and susceptible to infection, like any broken skin.
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