Are canker sores of viral origin? Bacterial?

The causes of canker sores are still widely misunderstood. However, specialists agree that their origins are neither viral (as herpes) nor bacterial. On the other hand aphthous lesions can cause secondary infection, extending the length of crisis and increasing pain.

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Women (55%) are more affected than men(45%) by canker sores

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Keep in mind that the origin of canker sores might be a result of numerous factors