I am sorry for your plight and I wish I had better answers. Unfortunately, http://skinparasites.com/ seems to be down this week. This happens, on occaision, which is unfortunate because there is a lot of support and good advice there. I'll let you know as soon as it's up.
Until then, hang in there. apple cider vinnegar (diluted w/ water so it doesn't burn) rinses on the skin is what seems to help stop the biting for me the most. The site has a whole tips column for advice on everything from cleaning your laundry to your ears!