Remedies for a Fever Blister

Fever blisters, also known as cold sores, are a common condition caused by the herpes virus. Unlike canker sores, which are not caused by the herpes virus, fever blisters are contagious. They most often manifest themselves as painful, fluid-filled blisters on the red part of the lips. Once you are infected, the virus remains in the skin in a dormant state. Factors such as stress, menstruation and sun exposure can trigger another occurrence.

Treatment

• Most fever blisters resolve themselves in a span of 7 to 10 days. The most common treatment is the application of topical ointments like lidocaine or benzyl alcohol to help reduce pain. If you begin using an antiviral medication when the fever blister first appears, it may cut down the pain and duration of the sore. If fever blisters become a recurring problem, your doctor will likely put you on an antiviral medication to prevent the sores from returning so frequently.

Home Remedies

• Since it fever blisters heal by themselves, the best thing you can do is leave it alone and let it run its duration. Do not squeeze, pick or pinch the blister as it can then become infected and get worse. If the pain persists after the application of a topical ointment, oral pain relievers like aspirin, Tylenol or ibuprofen can help. Another option is the application of ice or warm compresses to the sore. It will not shorten the duration of the fever blister, but it can help manage pain.

Prevention

• It is important to prevent infecting other people with the virus that causes fever blisters. When you have a sore, try not to kiss anyone or share utensils. Frequent hand washing will also cut down the risk of spreading the virus. Avoiding triggers for flare-ups is also important. Anything that stresses your body, like a flu or cold, too much sun or lack of sleep can trigger more fever blisters. The application of sunblock on your lips can help reduce the risk of fever blisters coming back.