Don't worry about the rash. The rash means the Erbitux is having the effect they want. You might want to look up Charm if you have questions about the Erbitux only route. Maybe you already have. I haven't gone back in the posts.
I won't say much else because I am not a Dr., but Charm has said and experienced plenty about/with Erbitux.
Kathy

Kathy wife/caregiver to:
Kevin age:53
Dx 7/15/11
HPV16+ SCC Stage IV BOT/R
Non smoker, casual drinker
7/27/11 Cistplatin, taxotere,5FU 2/3week sessions, followed by IMRT 125cgy x 60 (2x daily) w/Erbitux weekly. Last rad 10/26/11. Last Erbitux 10/27/11
PEG placed 9/1/11 Removed 11/8/11
Clear PET 10/12 and 10/13 and ct in 6/14