A member asked:

What to do if i have 4 canker sores in my mouth -- what could be possible causes?

3 doctors weighed in across 2 answers

Several factors: Canker sore can be related to stress, trauma, vitamin deficiency, sensitivity to certain chemicals, most commonly the sls in many tooth pastes. It can also be a autoimmune problem. If your canker sores are large, frequent and many you should talk to your doctor about your immune system.

Answered 6/22/2013

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Dr. Paul Grin answered

Specializes in Pain Management

Canker sores: are the most common oral lesions. Individual ulcers typically last 1-2 weeks. The condition is idiopathic (cause is not known) recurrent aphthous ulcers is usually self-limiting. Try to keep adequate oral hygiene as possible. If concerned see your dentist after 10 days or visit today for laser immediate amelioration.

Answered 7/19/2015

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