Other signs of this condition include rough or thick white patches of uneven shape and gum pain, especially after eating acidic or spicy foods. White or red lesions can be signs of oral cancer ...

It can cause white, lacy patches on the mouth and gums that may become painful open sores or red patches, Silverstrom says. This condition is caused by the immune system attacking cells of the ...

The white patches are known as leukoplakia that occur on the mucous membrane of the mouth, gums, or tongue. The red patches, known as erythroplasia, can appear on the gums, tongue, or mouth lining.