Urticaria is divided into acute and chronic. Among them, acute urticaria is most afraid of triggering anaphylactic shock. A severe allergic reaction causes symptoms in many tissues throughout the body. Once the upper respiratory tract is edema, it may be difficult to breathe or even suffocating.
is eight-year-old blessed to be lively and active. When returning home from school a few days ago, a large, slightly raised, reddish rash appeared on his limbs, which was like being stung by a mosquito. The bite, because he kept scratching, his mother immediately took him to the dermatology department for medical treatment and was diagnosed with urticaria.
Although taking antihistamine and steroid drugs, Youyou still felt itchy all over. The doctor felt it was different. Further examination revealed a positive reaction of mycoplasma antibody, which turned out to be urticaria caused by mycoplasma.
Urticaria is mild, with goldfish eyes and sausage mouth. In severe cases, it may be difficult to breathe and cause suffocation.
Urticaria is one of the common allergic diseases in children. The skin surface appears reddish, swollen to the touch, itchy, and slightly Raised patches.
These rashes may disappear within a few hours. Therefore, urticaria is also called a'rubella mass'. The cause of the disease is severe allergic reactions, which are related to mast cells and basophils in the body. For deep tissues, angioedema is produced.
If an acute allergic reaction occurs around the eyes or swelling of the lips, it will become goldfish eyes or sausage mouth. The most feared is that there will be severe allergies around the throat. In severe cases, it may affect breathing.
What are the causes of urticaria? Food, drugs, mycoplasma, and sinusitis are all possible
Common causes of acute urticaria include food, drugs, insect bites, allergen contact (latex, pollen, animal saliva, nettle plants, etc.), blood transfusion , Infection (type A streptococcus, mycoplasma, sinusitis, hepatitis, Epstein-Barr virus, etc.).
If urticaria appears on the skin every day for more than six weeks, it is chronic urticaria. The cause is more complicated. Seventy is chronic idiopathic urticaria, and 30% is induced urticaria, which may be caused by cold stimulation, exercise, and washing heat. Bathing, sweating, and very few are caused by autoimmune diseases, vasculitis, thyroid diseases, and tumors.
remind parents that if their children eat shelled seafood such as shrimps and crabs, they will develop urticaria within a few hours, and they should consider allergen testing. In addition, infection is a common cause of acute urticaria in children. If it is caused by bacteria or mycoplasma, antibiotics must be used. Whether
is allergic to a certain food, you can know that
's current allergy testing methods are divided into skin testing and blood test. Skin testing refers to the use of a needle tip to touch the substance to be tested. If a large area of lumps appears on the skin, it means that you are allergic to this substance; and the blood test is to detect the allergen-specific'IgE' and draw a blood A number of allergens can be detected, and the results can be known in about 3 to 5 days.
Even if certain foods are detected as child’s allergens, it does not mean that they cannot be eaten. The source of allergies should be observed based on the usual eating habits. If the child does not experience an allergic reaction after eating it, he can try to eat it step by step, but because this method has certain risks, it must be evaluated by a doctor before deciding whether it is applicable.
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