What is it?

Aquagenic urticaria is a rare condition in which exposure to water, including sweat and tears, causes a rash or hives on the skin. The rash typically appears within minutes of exposure to water and can last for several hours.
The exact cause of aquagenic urticaria is not fully understood, but it is believed to be related to an abnormal reaction of the immune system to water. The condition is more common in women than in men, and it often begins during puberty.

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Signs & symptoms

Symptoms of aquagenic urticaria can vary in severity and may include:
* Red, itchy rash or hives on the skin
* Swelling of the skin
* Burning or stinging sensation on the skin
* Headache
* Nausea


The diagnosis of aquagenic urticaria is usually made based on the person's symptoms and medical history. A dermatologist or allergist may perform a physical examination and ask questions about the timing and characteristics of the rash or hives, as well as any other symptoms that may be present.
In some cases, a water challenge test may be performed to confirm the diagnosis. During this test, the person's skin is exposed to water and observed for the development of a rash or hives. The water used in the test may be tap water or distilled water, depending on the individual's sensitivity.
Other tests may be performed to rule out other conditions that can cause similar symptoms, such as allergies or other types of urticaria.


There is no cure for aquagenic urticaria, but there are several treatments that may help manage the symptoms. These include:
* Antihistamines: Medications that block the release of histamine, a chemical in the body that causes itching and swelling. Antihistamines are often used to treat allergic reactions, including aquagenic urticaria.
* Topical creams: Creams and ointments containing corticosteroids or other anti-inflammatory medications may help reduce itching and inflammation of the skin.
* Avoidance of triggers: Avoiding exposure to water, or using only filtered or distilled water, may help reduce the frequency and severity of symptoms.
* UV light therapy: Exposure to UV light may help reduce symptoms in some people with aquagenic urticaria

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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