I find MSG makes many weird lil symptoms crop up for me. I think I am overly senstive now that I have been completely weaned from it, and go far out of my way to avoid it. When I find it has been secretly added to a food I didnt expect, or wasnt included in the list of ingredients, and I had to look it up to find out, I get headaches, crawlies, itchies, and more.
I hope you are feeling better today.