Don't quit the Tarceva! My sister has been on it for 2 years and has had the same side effects. Rash on her scalp, she says it "hurts to touch it". She is diligent and puts lotions on her head every night before going to bed and her Dr. Rx antibiotics when it becomes really irritated and sore. If I may drop back, she had headaches and went to the Dr. only to find out via CT Scan that she had 2 lesions on her brain stem. A ches CT revealed a spot in her left upper lobe of her lung. In Fall of 2007 she had a Gamma knife to her 2 in her brain and had her lobe removed. Since then she has been on the Tarceva and has been getting good reports!! This stuff is a miracle drug; it just has crappy side effects. She currently is also experiencing some blistering but this was because she did not wear sunscreen on her feet while wearing sandals. Also, she recently has a blister on her chest that popped and is going to speak to her Dr. about this, but from what I have read, it is another side effect of Tarceva but needs to be addressed. He has taken her off of it for a couple weeks at a time to help things clear up, but then she goes back on it until it worsens again. It is still better than the alternative, so we just take it a day at a time. I guess also that it effects everybody different ways to?? Hope this has helped you in some way.