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...
Anti histamines didn’t work so I will just continue with the lavender oil. @Zoffiel I have applied the anti fungal cream twice but no difference yet. I will apply again later just out of curiosity.