i know how you feel. This form of eczema is THE worst form I've encountered. I had never experienced this form until last year at my most ill period and it recently returned in a minor form. I not long ago made a post about it and someone ( a fellow sufferer) provided a very helpful link to information about it that clued me in to what was causing this in my case. In my situation, my cause was being toxic with heavy metals. I have been chelating and the only way I cleared this problem up in the past was with a cortisone shot, and then it goes away and doesn't return for at least 6 months.
If you want to see the link, scroll through a couple of pages on this forum and it is listed under my post about fluid filled blisters.