Hello, I suddenly got a rash on both arms, my eyes are getting itchy, my throat feels dryer, and my scalp is itchy.. I just had a mini handful of nuts but I ve never had an allergic reaction to nuts. I also just touched a bit of graphite from the pencil I was using to write with. Is this normal, as in do people randomly break out in rashes like this or could I take Benadryl just in case I can help whatever I m experiencing?