Could a painful lump at the base of skull be caused by sinus infection?

While sinus infections can cause pain and pressure in the face and head, they typically do not cause lumps or bumps. If you have a painful lump at the base of your skull, it is important to see a doctor to determine the cause. It is possible that the lump could be caused by a sinus infection, but it is also possible that it could be a sign of a more serious condition, such as a tumor or an abscess.