Mosquito bites in children can cause an allergic reaction. Mild allergic reactions mainly occur at the localized area of the bite, which can cause local redness, swelling, bumps or ulceration. Generally, after symptomatic treatment, localized application of dermatitis, glycerite lotion, etc., the symptoms can be effectively relieved. More severe allergic reactions can cause systemic symptoms. More common are fever, convulsions and even laryngeal edema in children, leading to respiratory difficulties and asphyxia. This kind of systemic allergic reaction is often more dangerous, need to go to the hospital in time to avoid serious consequences.