Hi, I seem to have come into contact with something that is causing me to have very dry, itchy skin on my face, one forearm and the opposite hand. I have had a low level minor rash and there was some minor swelling too. A few days ago I started using a homeopathic gel with calendula and it cooled things a bit, but I am still very dry, flaking skin and somewhat itchy. Someone suggested trying Benadryl - your thoughts?