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What Causes Urticaria In Toddlers. Chronic urticaria is usually caused by autoimmunity or a chronic underlying infection. Histamines are a chemical made by allergy cells mast cell and other immune cells eosinophils basophils etc that goes into overdrive to get rid of the. Other times medicines food insects or an infection can trigger an outbreak. Insect bites and diseases may also be responsible.
The condition is considered chronic hives if the welts appear for more than six weeks and recur frequently over months or years. Urticaria can sometimes be caused by medications particularly ibuprofen and related medicines NSAIDS or some blood pressure medications. However the most common cause of urticaria in children is virus-induced and happens when your child is sick or shortly after an illness. Hives urticaria is a sudden outbreak of red itchy and swollen areas on the skin. Infections responsible for urticaria are the most common benign viral upper respiratory tract or digestive infections found in the young child. The point of origin is contact with an allergic substance which manifests itself differently for each individual.
The abnormal build-up of mast cells that causes urticaria pigmentosa happens because of a mutation or change in a specific gene.
Infections responsible for urticaria are the most common benign viral upper respiratory tract or digestive infections found in the young child. In some cases the cause is not known. The point of origin is contact with an allergic substance which manifests itself differently for each individual. It can be itchy and painful. How common are hives in children and what causes them. Hives urticaria are red itchy welts that result from a skin reaction.