well interestingly, it developed after swimming in water that has on and off had industrial waste dumped in it and raw sewage. Which of course, we didn't know. I think this triggered everything.
thank-you for the reply.
Hello,
Water urticaria, or aquagenic urticaria, is a rare condition in which hives develop within 1 to 15 minutes after contact with water. The hives last for 10 to 120 minutes and do not seem to be caused by histamine release like the other physical hives. Most investigators believe that this condition is actually exquisite skin sensitivity to additives in the water such as chlorine but distilled water can also cause this reaction.
Water urticaria is diagnosed by applying tap water and distilled water to the skin and observing the reaction.
Treatment of water urticaria includes epinephrine, antihistamines, or cortisone-like drugs. Itching can be controlled with cold packs or commercial topical agents that contain menthol, camphor, eucalyptus oil, aloe, antihistamines, or cortisone preparations. Also make your son wear a bracelet mentioning about his condition of water urticaria and food allergies.He should also avoid all the foods containing the ingredients to which he is allergic.He should also carry an epipen with him.
Hope it helps.Take care and pls do keep me posted.