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If you have a cold sore – small blisters on the lip or around the mouth – you’re not alone. More than half of Americans ages 14 to 49 carry the virus that causes cold sores. The virus stays in the body even after the cold sores clear. If the virus reactivates, or wakes up, you could get cold sores.
Cold sores are different from canker sores, which are not caused by a virus and occur inside of your mouth. Cold sores may appear just once in a person’s lifetime or return again and again.
According to dermatologists from the American Academy of Dermatology (Academy), many things can trigger cold sores, including:
- Stress, fatigue or being run-down
- A cold, fever or flu
- Exposure to the sun
- Hormonal changes, such as during menstruation or pregnancy
- Trauma, such as shaving, cuts, dental work, or facial or cosmetic surgery
Although most cold sores heal on their own, there are many things you can do to help manage your symptoms. To treat cold sores at home, dermatologists recommend the following tips:
Cold sores usually heal in a few days to a couple of weeks, however prescription oral antiviral medication may be helpful for shortening the episode if taken within the first 72 hours. If you get cold sores frequently, speak with a board-certified dermatologist, as this medication may also be used for prevention.
Unlike canker sores, cold sores are highly contagious. If you have a cold sore, dermatologists recommend avoiding intimate contact – such as kissing – and sharing cups, towels, razors, toothbrushes and any other objects that may have come in contact with your cold sores. This will help prevent the cold sores from spreading to another person.