Benadryl and Me don't play well together

oof. I have some sort of skin allergy reaction rash that popped up last Friday afternoon. Suspect is the cleaning stuff my chiro must use on his table since it showed up soon after an appointment and only on my arms. Not a huge deal, not itchy, just teeny small annoying bumps. This morning I thought I should try taking a 1/2 dose of benadryl. Fast forward to 2 hours later and that was a HUGE mistake. Apparently my system doesn't play well - I feel like a bumbling clumsy fool. Hope it goes away soon!