If a child is bitten by a mosquito, red blisters on the skin means that the mosquito is more toxic, when the child belongs to the allergic body, this phenomenon may also be due to allergies caused by the symptoms. And patients coated with the affected area of the skin is purplish red, but also accompanied by itchy skin and yellow water symptoms. When the patient is bitten by mosquitoes, the skin tissue will also appear pigmentation, which will cause the affected area to be purple-red. This may also be due to serious symptoms caused by the infection of pus, for the situation must pay attention to the cleanliness of the affected area, can be treated with topical Bactroban. The phenomenon may also be due to the patient’s own physical problems or the lack of certain antibodies in the blood caused by, as long as the patient’s body does not appear other abnormalities, no special treatment, usually just protect themselves from mosquito bites can be.