Margaret,
Regarding the
Erbitux rash (i.e., pimples), I had it very bad, even going inside my nose - made the radiation mask very uncomfortable.
The final resolution was daily steroids and oral antibiotics, which were very effective (you can find the specifics on one of my previous posts). I had an antibiotic cream, but I don't think it was very helpful and ended up not using it much.
Best wishes,
Chris