Rachel, you sound like a textbook case case of mold induced illness - the blood sugar issues, light sensitivity, tingling, burning, tinnitus, twitchy eyes and crushing fatigue. I know it's a popular diagnosis these days just like Lyme and some others but in your case your symptoms strike me as similar to some of my own and others I've read about so I don't suggest it offhandedly. The mold does not have to visible and the house does not have to old for there to be problems. Are you in the Bay Area? A lot of people suffering from the "mold triggered ME/CFS" subset of this illness became ill here in the Bay Area, especially Berkeley are the South Bay, including myself and Julie Rehmeyer (link to her story on this site below). I recommend checking out the Paradigm Change website at http://paradigmchange.me/ and also reading Julie's story here on Cort's site if you have not already at: http://www.healthrising.org/forums/...-rehmeyers-mold-avoidance-recovery-story.261/