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General Science => General Science => Topic started by: Theevilestnerd on 18/08/2019 21:45:41

Title: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Theevilestnerd on 18/08/2019 21:45:41
For example, I recently read about a girl, who has an allergy to water. Even distilled water caused a reaction since she was allergic to water itself and not to chemical additives in water. if they take a sip of plain water, they go into anaphylactic shock. They are diagnosed with Aquagenic Urticaria otherwise known as an allergy to water. However they survive by drinking several glasses of milk, tea, and juice a day, which does not seem to affect them, and their blood plasma for instance is not causing a constant reaction inside them, it's only if they were to drink plain water or touch plain water a reaction would happen.



there are others with the condition who are left unable to drink water due to swelling of the tongue and throat, but the one above goes into the most detail. Would this be an IgE mediated reaction, like with peanut protein?
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Kryptid on 19/08/2019 00:58:39
Are you that same person who repeatedly posted threads about this very same thing in the past?

Either way, no, it isn't an allergy. If it was, they would be in a constant state of allergic reaction because the human body is mostly water. Allergens still cause allergic reactions even when they are diluted, so the fact that the water in our body is impure isn't the answer.
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Theevilestnerd on 19/08/2019 12:25:07
Are you that same person who repeatedly posted threads about this very same thing in the past?

Either way, no, it isn't an allergy. If it was, they would be in a constant state of allergic reaction because the human body is mostly water. Allergens still cause allergic reactions even when they are diluted, so the fact that the water in our body is impure isn't the answer.

Articles about water allergies pop up often so I wouldn't be surprised if more than one person has made a thread about this condition. Obviously these people are experiencing allergy like symptoms, do you mean it's not an antibody response?
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: chiralSPO on 20/08/2019 03:40:37
Yeah... so many people with the same IP address...

Please, pick one account and use it exclusively.
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Bored chemist on 20/08/2019 06:49:09
"Would an allergy to water be IgE mediated or osmotic pressure mediated?"
No, because it wouldn't exist.
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Theevilestnerd on 20/08/2019 16:13:30
"Would an allergy to water be IgE mediated or osmotic pressure mediated?"
No, because it wouldn't exist.

Well, Aquagenic Urticaria exists, so a mechanism has to exist. It is often called an allergy to water which makes me wonder if it's IgE mediated (against water molecules) like with peanut allergen for instance.
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Kryptid on 20/08/2019 18:24:43
Well, Aquagenic Urticaria exists, so a mechanism has to exist.

Bored chemist means that a water allergy does not exist. Aquagenic Urticaria, whatever it may be, cannot be a water allergy.
Title: Re: Would an allergy to water be IgE mediated or osmotic pressure mediated?
Post by: Bored chemist on 20/08/2019 19:40:40
makes me wonder if it's IgE mediated (against water molecules)
Which part of "no" didn't you understand?