I want to add an update, since posting I have still had no itching, but the biggest difference is that all of the big lesions (neck, groin, buttock have started healing- they used to also feel like there was a lump or somethibg inside) and now feel flat and painless. The smallest one is almost closed over and the largest now just look like "normal" scabs and not at all inflamed or red. These have been on my skin a long time- all over a year and never healing at all!
I'm sure this is also related, there has been a pinkish colour to my urine today, no pain or smell or sign of infection, so maybe something being cleared out of my system. Please ask any questions if anyone sees this or is interested.