New York-- It is a resource we can't do without, no matter who or what we are. It's a universal must....water.

Would you believe someone if they told you they were allergic to water? And it would be even harder fo you to believe that touching it could kill you.

That's the reality for people with a rare condition that's has even doctors baffled.

There are people who are...allergic to water.

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Some patients are so sensitive, their own tears and sweat can cause a reaction. Doctors say even they are not sure of the exact mechanism of why a patient develops a water allergy.