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What is the Difference Between a Cold Sore and a Canker Sore?

What is the Difference Between a Cold Sore and a Canker Sore?

Apr 16, 2018 | Medical

What are Cold Sores? Cold sores, commonly called fever blisters, are small clear blisters filled with fluid that form around and in the mouth. They are caused by the herpes simplex virus (HSV1) living inside nerve cells. They usually last no longer than two weeks,...