Cold sores are caused by the herpes virus and can be transmitted by taking a sip from someone's glass, trying someone's dinner with his or her fork, or sharing a towel-if that person has a cold sore or has just had one.
One of the worst things about cold sores is that once you get one on your lip, they're hard to hide. Find out how they are different from canker sores, and learn about natural remedies that can help to prevent and heal them.
What cold sore remedies have you tried? Share your experiences below in the comments.
photo credit: © Marinela Sotoncic