Oral Lichen Planus: This inflammatory condition causes white patches in the mouth and on the tongue, often accompanied by pain or discomfort. This sexually transmitted infection can cause sores in ...

However, a singular, hard bump on the tongue can be a cancerous growth. Sores, red or white spots, irritated spots, numbness, lumps, and growths in the mouth are common signs of cancer.

"When there are sores and a mix of white and red areas on [the] tongue, then, at that time, you need to seek healthcare advice." Insider's takeaway Different factors can cause a white tongue ...