Canker sores: Canker sore is the most common oral lesions. Individual ulcers typically last 1-2 weeks. The condition is idiopathic (the cause is not known) recurrent aphthous ulcers is usually self-limiting.
Answered 9/21/2014
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Rash in mouth: This is impossible to answer without a visual and clinical exam, and additional information. You need to see your dentist or an oral surgeon for a thorough clinical exam and medical history.
Answered 9/21/2014
3.7k views
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