A fever blister, also known as a cold sore, is caused by a strain of herpes simplex 1. Herpes simplex 2 is the strain of the virus that causes genital herpes. Often unexpected, a fever blister occurs after you have come into contact with the virus. Because there is no cure for herpes simplex 1 or herpes simplex 2, once you catch it, it doesn't go away, even when you're showing no physical signs. However, there are steps you can take to prevent regular outbreaks of a fever blister.
Step 1
Avoid skin-on-skin contact with someone who has a fever blister. Even after the blister has healed, you can still contract the virus from someone, if you are prone to infections or if you have a depressed immune system. Remember that the virus lies dormant and is always present, even when it's not visible.
Step 2
Don't share items with someone who has fever blisters, particularly items that can carry and spread the virus, such as razors, utensils, unwashed drinking glasses, lip balm and lipstick.
Step 3
Maintain a healthy immune system by taking vitamins such as zinc or vitamin C and getting 6 to 8 hours of sleep. A vulnerable immune system is highly susceptible to contracting viruses such as herpes simplex 1.
Step 4
Use sunblock on your face and lips when they're exposed to extreme sun or extreme cold. Extreme conditions foster infections in the body. The infection can surface as a fever blister.
Step 5
Wash your hands regularly to rid yourself of germs and to prevent the spread of the virus to areas that are highly susceptible, such as your eyes and genitals.
