Shampoo bar symptoms and conditions

I have been on Levoxyl 100 mcg for 9 months and I never related this rash with the medicine I was taking. I have tried changing my shampoo, bar soap, laundry soap trying to figure out what I am allergic too. I still have this rash-red bumps that sometime itch and when I scratch they seem to bring out more redness. My doctor prescribed me cream but the rash is still there.
I have headaches but I think they are sinus related.