Fever blisters are also called cold sores and appear as small, itchy, red blisters near the mouth. They are caused by herpes simplex virus 1 (HSV-1) as differentiated from genital herpes (HSV-2). The virus is contagious and is normally carried in the body in a dormant state, appearing in outbreaks when a person is under stress, run down or during a menstrual cycle. They will normally heal and disappear on their own within two weeks, but some symptomatic relief can be achieved with home remedies. There is no "cure" for HSV-1. The best "cure" is not to get a fever blister with prevention. Avoid getting run down, kissing or touching someone with a fever blister or sharing personal items like a toothbrush. Sunburn can also set off a fever blister, so use sun block. Wash your hands carefully, especially if you have been around a person with a fever blister.
Alcohol
Dab benzyl alcohol on the blister with a cotton swab, being careful not to break the blister and spread the virus. Benzyl alcohol can ease the discomfort of a fever blister, according to Mayo Clinic staff.
Compresses
Don't rub or agitate the blister, which can spread or prolong the virus. Hold either ice or warm compresses against the blister to ease the itching and burning sensation. Cold compresses soothe and slow the percolating virus, while warm compresses can speed blood flow, which may cure the blister by speeding the healing process. An ice pack will help numb the affected area.
Kitchen Cures
A cold, wet tea bag or broken leaf from an aloe plant can also be applied carefully to the blister. Other items, such as a cloth soaked in white vinegar or honey can also mitigate the itching and burning sensation of the active virus. "Cures" for a speedier recovery include a paste of water and cornstarch or table salt, with varying anecdotal reports of success.
