What are some typical signs of oral cancer?

The presence of persistent sores and lumps in the mouth is indeed a significant sign of oral cancer. Oral cancer can manifest as non-healing ulcers that may bleed, lumps or masses in the mouth, and changes in the texture of oral tissues. These symptoms are critical to recognize early, as they can indicate malignancies that require prompt medical evaluation and intervention.

The other options do not directly relate to the typical signs of oral cancer. Skin rashes and headaches can indicate a variety of health issues but are not characteristic of oral cancer. Swollen gums and toothaches often point to periodontal disease or dental problems rather than malignancy. Areas of decay and sensitivity to sweets are common dental issues that arise from cavities or dental decay, not specifically tied to oral cancer. Recognizing the correct signs can lead to early diagnosis and improve the chances of successful treatment.