article_snippet.sent: A 17-year-old teen is so allergic to water that even sweating can cause a potentially deadly burning rash.
article_snippet.sent: Alexandra first realized Alexandra had the condition when Alexandra developed hives after spending time in a hot tub while on vacation.
article_snippet.sent: After coming into contact with water - or blood, sweat and tears - the sufferer develops painful, itchy hives that spread over the affected area.
article_snippet.sent: Investigators believe hives are not caused by a histamine release but are the result of extreme skin sensitivity to additives in water such as chlorine.
article_snippet.sent: Dermatologists say those with the condition can ease the burn of hives with certain antihistamines.
article_snippet.sent: When Elizabeth was about 15 Elizabeth came across a medical site that discussed aquagenic urticaria - when Elizabeth suggested it to Elizabeth dermatologist he agreed that it was Elizabeth condition.
article_snippet.sent: Investigators believe the hives are not caused by a histamine release but are the result of extreme skin sensitivity to additives in water such as chlorine.
article_snippet.sent: Dermatologists say those with the condition can ease the burn of the hives with certain antihistamines.
article_snippet.sent: Two women in the UK who also suffer from the condition - and their reactions to water .