Why do people get reacurring canker sores in there mouth?

Canker sores: Canker sores are most likely caused by a virus that lays dormant within your body. During times of stress the virus can cause one of these sores. Also, toothpastes and mouthwashes that contail sls, or sodium lauryl sulfate, can increase the incidence of sores in those who have had them before. Finding oral hygiene products without sls will help decrease the incidence of canker sores.

Inflammation: Recurrent canker sores are inflammation and ulcers of the lining of the mouth .These may be triggered by stress, food sensitivity. A good anti-inflammatory treatment is dgl - deglyzzrihinated licorice which calms the oral mucosa when chewed. Also reflux from the stomach can be associated with canker sores