My mom started taking Tarceva for lung cancer about 1 week ago and initially got a mild facial rash but now complains about painful areas in the corner of her mouth, inside her nose and the corners of her eyes. I read about these side effects and it looks like people use the Lindi Face Serum to relieve discomfort. But she is also complaining of ulcers on her tongue and gums under her dentures, making eating very painful and is thinking about changeing to puree foods. Does anyone else have this complaint and if so, what helps with this? And has anyone used the Lindi Face Serum for the sore mouth and and eye areas and is it effective?