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2. Hives - Wikipedia

   en.wikipedia.org/wiki/Hives

   Hives can also be classified by the purported causative agent. Many different substances in the environment may cause hives, including medications, food and physical agents. In perhaps more than 50% of people with chronic hives of unknown cause, it is due to an autoimmune reaction. [7] Risk factors include having conditions such as hay fever or ...

3. What are hives? A dermatologist explains

   www.aol.com/news/hives-dermatologist-explains...

   Hives, or urticaria, are itchy pink welts that could appear anywhere on your skin. Some are bumps as small as a pinhead, while others may merge together to cover large patches of your skin.

4. 16 Ways to Get Rid of Hives, According to Doctors - AOL

   www.aol.com/16-ways-rid-hives-according...

   The most common allergic reactions that trigger hives, also known as urticaria, are foods, bug bites, latex, medications, pet dander, plants, or pollen, according to AAD. Dr. Kim says the ...

5. Physical urticaria - Wikipedia

   en.wikipedia.org/wiki/Physical_urticaria

   The cause of physical urticaria is unknown but it has been suggested to be an autoimmune disease, suggesting that antibodies, which are produced by the immune system to protect humans from foreign microbes, are binding to body tissue and damaging it. [8] In some cases physical urticaria can be a symptom of an underlying health issue such as: [9 ...

6. Autoimmune urticaria - Wikipedia

   en.wikipedia.org/wiki/Autoimmune_urticaria

   The differential diagnosis for autoimmune urticaria includes other conditions that can cause hives or similar skin reactions. [32] These can include allergic reactions, other types of urticaria such as physical urticaria (triggered by physical stimuli such as pressure, cold, or heat), and conditions such as mastocytosis and mast cell activation ...

7. 7 reasons you could be breaking out in hives and how to deal ...

   www.aol.com/news/7-reasons-could-breaking-hives...

   From stress to allergic reactions, these are some common reasons you could be breaking out in hives.