14. Mouth Sores or White and Red Patches
Many early signs of oral cancer can be mistaken for common conditions like canker sores or minor infections. The key difference is persistence: oral cancer symptoms typically do not resolve on their own within two to three weeks.
Warning signs include white patches (leukoplakia — which can be cancerous or pre-cancerous), sores on the lip or inside the mouth that bleed easily and don’t heal within two weeks, rough or crusty areas on the lips or gums, and areas in the mouth that bleed for no obvious reason. Catching these changes early — often through a routine dentist visit — can make a significant difference in treatment outcomes. Regular dental checkups provide an opportunity for brief oral cancer screening, and bi-annual visits are recommended for optimal early detection.