Oh Gosh Nanc, I have no idea and I am so sorry!! I do have issue from time to time with swallowing especially things like soup where it is a repetitive swallowing action. choking too (freaks me out when this happens). My speech gets involved sometimes (slurring- sometimes meds, sometimes CRPS). Seems more apparent the more tired I am or the more flaring I am. My eyes get blurry but nothing like what you have described. I wish I knew more. I get it in my tong often and kind of bad, lips, skin on my face, scalp, eye brows… seriously… everywhere. It’s just worse in certain places is all. I sure hope they are able to help you Nanc!