What Are Mouth Sores

What Are Mouth Sores?

Canker sores are small, painful sores that erupt inside the mouth - on the cheek, tongue, floor of the mouth or gums. They range in size from a pinhead to a pea, and may last between 8 to 10 days. Canker sores may be triggered by stress, small cuts, as well as food or drink. Unlike cold sores, canker sores occur exclusively inside the mouth and are not contagious. Twenty percent of the population suffer from recurring canker sores. Medication is available.

What Are Cold Sores?

Cold Sores, or fever blisters, are liquid-filled blisters that erupt around the lips, chin, or nose area. The chickenpox-like herpes simplex 1 virus that causes cold sores remains in a person's body after the initial infection. Approximately 80% of the population carry the HSV-1 infection.

For some people, the virus is inactive, but many suffer recurring outbreaks. Factors known to trigger cold sores include stress, fever and illness, prolonged sun exposure, fatigue, and menstruation. Often a tingling or burning sensation is felt one day before a cold sore erupts. Reddening and swelling precede the actual eruption of a painful fluid-filled sore. After a few days, the sore will seep fluid, crack, and begin to dry and form scabs.

Hygiene is important. Keep the sore clean and bacteria-free. Refrain from pinching or touching and always wash hands after touching the sore. To prevent the spread of the virus, avoid kissing and sharing or drinking utensils during an outbreak. Medication is available.

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