Both canker sores and oral cancer can appear as an ulcer in the mouth. These lesions may appear on the cheeks, lips, or on or under the tongue. The location alone cannot define the type of lesion ...

Canker sores are small, painful reddish lesions in the mouth that have a white or yellow center. Some causes of canker sores are spicy/acidic foods, vitamin deficiencies, braces, and stress.

It feels worse with every prodding poke. Another canker sore. What did you do to deserve this? Maybe nothing at all. “Most times, we don’t know why they come,” says Dr. Alessandro Villa ...

Causes of a sore throat on one side includes the flu, tonsillitis, a canker sore, or a tumor. Look out for other symptoms to help you identify what's causing your sore throat on one side.