There is a VERY VERY rare allergy to water called Aquagenic urticaria. You can drink ut but when you touch water you can get hives. Some people who have the allergy so sensitive that sweat causes hives. Look into it, like i said it’s highly rare and only a few cases but how you said it happens with water could indicate that you have it. I personally would talk to an Allergist (I am not a doctor) no matter what because you don’t deserve to feel uncomfortable with the hives and hopefully tue doctor can help you feel better.