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What Causes Sudden Hives In Toddlers. Antibiotics or over-the-counter medications such as penicillin sulfa drugs aspirin and ibuprofen. Red swollen bumps on the skin appear when the blood cells react to an allergen and release a chemical called histamine that causes the blood vessels under the skin to leak. Its not always possible to tell what causes the skin to release these chemicals but they often happen in response to some kind of trigger. In 95 of chronic conditions nobody knows what causes them though it is thought to be autoimmune in nature.
When hives linger for more than six weeks the condition is chronic. Common triggers for hives include. They are not an allergy. Some children get hives if a food is. What causes hives in a child. Hives happen when histamine and other chemicals are released under the surface of the skin.
Allergic reactions to certain foods or medications often cause acute hives and swelling.
Causes of Localized Hives. The hives should subside within a few hours. Some children with allergies seemingly outgrow them and adults can develop them almost out of nowhere. Sap from evergreens can cause local hives. Wash your childs skin and offer ice cubes or a cold pack to ease itching. In 95 of chronic conditions nobody knows what causes them though it is thought to be autoimmune in nature.