I was in a trial for Stivarga a few years ago, for use of Stivarga as a second line of treatment for mCRC. I had the exact same experience...11 days fine and then a whole body crazy rash. I was pulled off the trial, because it was about dosage and they couldn't lower my dosage or make any changes for their study. It lowered my CEA quickly, though. I would use it again , maybe at a lower dose, in the future.
FYI...it took about a week for the crazy rash to go away.
Stage 3C, Dx at 42, mom of 4
Colon resection 7/08
Met to right ovary, both ovaries removed 7/10
VATS 7/12, 2 nodes, right lung
10/14 3 lung nodes, Stivarga clinical trial
3/15-7/15 Folfiri & avastin for lung things
Break! One year of freedom
8/16 Folfiri & avastin..lung things again
Break! 10 months of freedom
1/18 rib mets, radiation, folfiri & avastin