Ah, the tummy troubles.
Mom has skipped the worst of the rash. She originally had acne, but now just has dry, crocodile skin. She also had the diarrhea, and was hospitalized for dehydration, but that was most likely complicated by her illeostomy. I wouldn't woory about that too much, but make sure you are staying hydrated and nourished.
On the plus side, Mom has not had any growth in her tumors since she started the Tarceva. We are very thankful for it around here.
Good luck!
Kelly