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...
You can't always see the effects of the taxol on nails until it grows out. I'm not discounting the herceptin but the combo. I know of another member who had itchy skin on herceptin and perjeta. Wonder if an anthistamine could help.