Yea. I had my dr, my neurologist, and the local hospital put it in my record not to give it to me. Since i have other allergies and diphenhydramine is pretty much standard protocal, its important. One time i was given it on accident and i kept hyperventilating because i was afraid i had forgotten how to breath but i wouldn't let my wife tell the nurse because she was "in on it." Its kinda funny now but at the time i was genuinely afraid i might not get out alive!
I'm sorry you have to work so hard to sleep.