Onco says Herceptin does not cause side effects even though the manufacturers of herceptin says it can. So, the peripheral neuropathy, sore throat, itchy rash, ridged and cracked nails, breathlessness...
@Blossom1961 - this is similar to mine! I never thought it could have anything to do with my BC!!
I've also had a rash on my upper back/shoulder blade area!! Sometimes itchy, sometimes just a 'rough patch' .... it comes & goes. I've had it 12 months now. A lot of the time I forget about it, as I can't see it - then it gets itchy & raises it's head again!