Girl is allergic to WATER!

I call BS on this because our bodies are 70% water. Maybe she is allergic to the chemicals in the water/rain etc but not the H20 molecules themselves.

I don't think that this disorder is an allergy. Allergy is an immune system disorder.
The girl has a skin condition, in which water causes itching.

Also, from the article you provided:
The allergy also means she cannot go for long baths or even drink a cold glass of water as it makes her throat swell up whenever she takes a sip.

Clearly, she doesn't have to avoid every contact with water. That would be impossible for obvious reasons (water is essential for the body, and most foods contain water.)
She only has to avoid prolonged external (skin, throat etc) contact with water.

For some information see http://en.wikipedia.org/wiki/Aquagenic_pruritus or search for "Aquagenic pruritus"

or Aquagenic urticaria

This is a different (although similar) disorder. It seems that Aquagenic pruritus doesn't have any visible symptoms, while at Aquagenic urticaria there may be visible spots to the skin (see Urticaria)

The article says it is Aquagenic Pruritis, but in fact it might actually be Aquagenic urticaria since it is mentioned that water causes "red rashes" to the skin.

You didn't take into fact she cannot drink water properly. Many people with this condition cannot drink liquids containing water normally or they get throat swelling.

This seems like a true allergy to H2O

Could be a psychological issue too. Like deatrix mentioned, most of our body is composed of water, including our saliva.

How can you be allergic to something that comprises at least 50% of your body composition? No allergy to her own saliva or sweat I hope.

I told you, it is not an allergy. And, how is it possible to not drink water? The person would die of dehydration.

It is probably a kind of skin sensitivity rather than allergy.

No but perhaps there isn't enough saliva in her throat to cause noticeable effects.

And maybe the sensitized mast cells only exist in her throat and in her skin.

I don't see how IGE receptors can't react to H2O molecules if they're the right shape and configuration.
People can have IGE reactions to sulfites and they aren't proteins.

Replace ''water'' in the article with ''nuts''. You have 100% allergy there, I don't see how it isn't an allergy.
She reacts to water when its on the skin AND when its ingested.

Same goes for peanuts with peanut allergy sufferers.

It is estimated that a healthy human produces between 0.75 litres to 1.5 litres of saliva daily. That's quite significant.

Water is the only evolutionary drive that is common among all living things. I'm sure it's not the culprit here.


Our brain is quite powerful, I'm sticking to this.

But if you look up ''aquagenic urticaria'' you can see it's a recognized medical condition.

''Wikipedia: list of allergens'' lists water as being an allergen.

I see no reason why water could not be an unfortunate allergen.

This isn't possible...

I want you to make you own conclusions on why this is so silly. Watch this first, then come back and let's talk

http://www.ppdictionary.com/tutorials/delayed_type_4.htm

http://www.ppdictionary.com/tutorials/type_I.htm

http://www.ppdictionary.com/tutorials/type_II_hyper.htm

http://www.ppdictionary.com/tutorials/type_III.htm

I read all your links and it doesn't answer my question. Why isn't an allergy to H2O possible? Simple as that.