After being bitten by a mosquito with a red spot, its can subside on its own or medication can be used to promote recovery. A red spot bitten by a mosquito is formed due to the toxin in the mosquito that causes capillary dilation and congestion, which will subside and return to normal over time. Usually the localization will be accompanied by itching, if the itching symptoms are serious, you can also use compounded glycerine lotion, ofloxacin gel, erythromycin ointment and so on to reduce the symptoms and promote recovery. It is recommended not to scratch when there are itching symptoms, so as not to make the symptoms more serious. Do not use too hot water to bathe, so as not to promote blood circulation, so that the red spots expansion or itching more serious. Usually pay attention to anti-mosquito, you can use mosquito nets, etc., to avoid mosquito bites. Before using the drug should carefully read the instructions, if there is an adverse reaction appeared after use, should promptly seek medical treatment.