I have the same troubles you have with the chemicals in the fabrics. Those chemicals caused me to develop open weepy, itchy areas on over 60% of my body. My legs looked like I was a burn victim. My hands were so swollen and reddened from the inflammation that I couldn't wear my ring and I kept them hidden when I was in public. I have now been diagnosed with an autoimmune disorder and psoriatic arthritis. I am on the Humira injection self administered every 2 weeks and a steroid cream to my hands twice a day. My dermatologist and I narrowed it down to the chemicals in fabric because I had recently returned to quilting after a 10 year hiatus. People have no clue how dangerous those chemicals are. I too had the daunting task of washing my fairly substantial stash. Pinking the edges worked well or running a zig zag stitch down the cut sides worked. It's a lot of work to wash a stash! I gave up. Now, I wash every fabric when it comes through the door. I still have unwashed fabrics in my stash. If I decide to use one of them, I just wash it prior to use. When I am using precuts or am having a flare up on my hands, I use these gloves.
http://www.amazon.com/Dritz-82309-Cr.../dp/B002Y2GY7U. Mine happen to be lime green so I can locate them easier. Good luck and know that you are not alone.