Do you know what allergy is?

Allergy refers to a group of symptoms caused by physical contact with substances that are considered harmful by the human immune system, but may actually be harmless, including itching, rash, vascular edema, dyspnea and so on.

The substances that cause allergic reactions are allergens, such as pollen, animal fur, alcohol, mango and so on. When people come into contact with this allergen, the body will immediately release histamine and other substances, trying to drive them away or destroy them. In this process, it may induce capillary dilation, vascular wall permeability enhancement and other reactions. When the reaction occurs on the skin, it may cause skin reactions, such as urticaria, which can be manifested as wind masses of different sizes, scattered or patchy. In the treatment, calamine lotion should be given locally to relieve itching and protect skin, antihistamines such as loratadine should be taken orally, and glucocorticoid drugs such as prednisone should be given if necessary. When the reaction occurs in the respiratory tract, dyspnea, bronchospasm, even asphyxia and shock may occur. At this time, you need to see a doctor immediately and use drugs for treatment, such as salbutamol, a bronchodilator.

In addition, patients should actively improve allergen detection to identify allergens, and once diagnosed, avoid touching the substance again to avoid inducing discomfort. When necessary, desensitization treatment can be carried out, that is, specific allergens are made into preparations with different concentrations for subcutaneous injection to induce the body to tolerate allergens until allergic reactions no longer occur.