If this is a case of SID, why do you suppose that it just started suddenly? Actually, he's always been a bit sensative to hugs, hair washing, walking barefoot on grass, and getting things on his hands. So, it definitely makes sense. I'm just wondering about the sudden tic. In regards to my attempt at "natural" foods, we've been at this for about 3 days now and my tics seem to be a bit better. Maybe it's just wishful thinking, but, I'll take anything at this point. I have sworn off artificial sweeteners for life! Does anyone know of any good books/magazines/websites with realastic info about eating/living more naturally (dye free, etc..)? Thanks.