Hi Sam09
I also suffer from the perjeta itch and will be taking it, along with herceptin, for ever. Thankfully I take a daily antihistamine (Claratyne or Telfast) which gets me through ok until mid arvo. I find a swim or cold shower works well after that along with ice packs. Have recently also added a phenergan at night if it's really bad, as according to my once this helps relieve the immune response and it helps me sleep which in turn allows me to cope better with the itching the next day.
I can't imagine how I would be feeling if this didn't work for me, as it's an impossible choice you're faced with. It might be worth seeing if your doctor can prescribe something to help you to sleep (if the phenergan doesn't work) so that at least you have some respite while you sort out a long term solution.
Take care xx
