You absolutely need to talk about this with your Dr.

I was getting a rash too - and it turned out that after the concussion I sustained I was suddenly allergic to wheat. I have always had allergies, but was never allergic to wheat before the injury. I suspect that the injury altered the chemistry in my brain which made me allergic to wheat. Eating something one is allergic to is not good for overall brain health.

Your Dr. needs to figure out what is causing your rash.

Much luck!