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Cold sores are caused by herpes simplex viruses-usually type 1 and rarely type 2. The area of infection usually reddens and then fluid-filled blisters develop. The blisters tend to recur on the same part of the person's body, for example, the lips, gums and mouth (causing a condition called gingivostomatitis), the eyes, or other parts of the body. There may be a single blister or a number of blisters present at one time. These blisters burst, becoming ulcers which eventually heal. New skin then grows over the affected area. Once infected with this virus, the person has it for the rest of their life. Therefore, cold sores may recur.
Often, cold sores recur when a person is under stress, exposed to sunlight, unwell or run-down, or undergoing hormonal changes. Sometimes, though, they re-appear for no apparent reason. |
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The following ointments can be applied to cold sores to dry and clean them and to help prevent secondary infection. They are all available from chemists.
• Betadine paint. This is often used on cold sores. It contains iodine.
• Gentian violet. It also contains iodine.
• Stoxil. It contains idoxuride, which is used as an anti-viral herpes treatment.
• Alcohol, methylated spirits etc. These are cheap but may sting.
• Vitamin E (in oil form). |
