Common signs and symptoms of lip cancer may include:

* A flat or slightly raised, whitish lesion or discoloration on the lip.
* A sore on the lip that does not heal, crusts over, or bleeds for an extended period.
* Unexplained tingling, pain, or numbness in the lips or the skin around the mouth.

Early-stage lip cancer may not show noticeable symptoms initially. Therefore, early detection by doctors during routine medical and dental examinations is of great importance.