Urticaria is a common allergic skin disease. When exposed to allergens, red patches of varying shapes and sizes appear on specific parts of the body, and itching occurs on these patches. The clinical manifestation of the rash is the rapid appearance of rash patches (rubella), which are often localized and itchy or tingling a few minutes before they appear. Some patients may have systemic symptoms such as poor appetite, malaise, headache or fever within a few hours or a day or two of the onset of the rash. Rubella patches are flat, red, or yellowish or pale edematous patches with a red halo around the edges. Sometimes, the rash may be circular in shape and may be referred to as ring urticaria, and several adjacent ring-shaped lesions may be joined or fused to form a map, which may be referred to as graphic urticaria. Sometimes there are bruises in the center of the damage, which can be called hemorrhagic urticaria, and the kidneys and stomach can bleed at the same time. When there are blisters in the rubella mass, it is called blistering urticaria. When there are large blisters, it is called urticaria herpetiformis. Sometimes the blisters or blisters occur on seemingly normal skin, but often with a red halo. Prevention and treatment of urticaria The cause of urticaria is an allergic reaction. There are many factors that cause allergies, such as medications, food, clothing, pollen, cosmetics, and so on. Treatment should start with allergen blocking and anti-allergy treatment, and in some patients desensitization. The treatment should be based on blocking allergens and anti-allergic treatment. If you have a relapse due to hot or cold stimulation, you should not avoid it too much, instead, you should gradually extend the time of hot and cold stimulation in order to adapt. Actively treat primary diseases, such as acute tonsillitis, cholecystitis, viral hepatitis, appendicitis, intestinal ascariasis, etc., to eliminate the source of disease. Keep your spirit happy and relaxed. You should also pay attention to temperature changes, increase and decrease clothing with temperature changes, and strengthen physical exercise. However, most patients have difficulty finding a clear allergen, so treatment can be oral anti-allergy medication, which can be combined with calcium, vitamin C and corticosteroids. Chronic urticaria is sometimes more difficult to treat and requires adjustment of the body’s immune function, such as insisting on a longer period of time (3-6 months) combined with two types of antihistamines, namely paracetamol, cycloheximide, seltzer, mindi and cimetidine. The timing of the medication needs to be adjusted so that it can be taken in the afternoon in order to prevent evening attacks. In addition, to enhance the efficacy can be combined with injections of thymidine, histamine globulin or kallikrein polysaccharide nucleic acid injection. In some patients, as the body develops, the immune function of the body will change and chronic urticaria will self-remit. What should I pay attention to in daily life urticaria? 1, keep the room clean: less cats, dogs and other pets at home, because cats and dogs and other pets, hair, dander, urine and feces, may cause human allergies, is an important factor in inhalation allergies; home diligent cleaning, less carpet, because the house dust often contains dust mites invisible to the human eye, if inhaled with the dust, often cause allergies and often unaware; in addition, patients with a history of allergies should go to the park less, home also 2, less contact with allergic substances: for patients who may be caused by contact with hives, they should use less soap containing fragrances, try not to touch rubber, hair dye and other chemicals, or wear gloves when touching these items; 3, quit smoking and drinking: do not drink alcohol, including wine, beer, and do not smoke, not only smokers themselves have allergic tendencies, but also their children and other passive smokers. Children and other passive smokers also have the possibility of allergy.