I'm currently suffering from skin rashes due to being exposed to the sea water last Saturday. I think I do have aquagenic. And it's so itchy. Tried taking some diphenhydramine last night, and it helped me get to sleep. I need some cottony lingerie to help me prevent from scratching my skin. It does help alleviate the pruritic feeling of my rash quite a bit. I just hope it would diminsh overtime. I can't go back to work with this condition. It's so damn uncomfortable!