Herpes is a common virus that causes cold sores on the mouth or sores on the genitals. The two most common types are HSV-1 and HSV-2. HSV-1 causes cold sores to...
If you've ever had a cold sore, also known as a fever blister, you're not alone. About 90% of people get a cold sore at least once in their life. Cold sores are...
