Cold sores

Cause: Cold sore and fever blisters are called by oral herpes, herpes simplex type 1 virus. The vast majority of people are infected with this virus in early childhood, and then the virus will become active at different times, such as when under emotional stress, the immune system is functioning low, after dental work, with fevers, or exposure to food allergies or the sun.

Signs and symptoms: small fluid filled sores appear on the skin and the mucous membranes around the mouth. The sores may weep and then form a scab before healing. Sometimes the skin will tingle or itch before the sores appear.

Treatment:

Topical agents are available over the counter and by prescription for cold sores. The drug acyclovir (Zovirax) is often used as it is an antiviral and can help prevent frequent or severe outbreaks.

The amino acid lysine has been shown to be very beneficial in decreasing the recurrence of cold sores. Substances that help the immune system, such as vitamin C and zinc, are also helpful. Topical zinc may also help. Avoid food allergens. Since sun exposure may also activate cold sores, taking calcium and essential fatty acids during periods of high sun exposure may help prevent outbreaks.

Reference:

Altern Ther Health Med 2001 May-Jun;7(3):49-56.