The hand is swollen after being bitten by mosquitoes, which is typical of papular urticaria, and the treatment includes medication as well as general care and so on. 1. Medication. Pemphigus urticaria is due to mosquito bites the skin will release some toxins, toxins on the skin caused by the stimulation of an allergic reaction, the treatment needs to be given to anti-allergic drug therapy, such as topical dinexed cream, fluoride acetate easy ice cream and so on. If necessary, oral antihistamines such as loratadine can be taken. 2. General care. In addition to redness and swelling, papular urticaria will also be accompanied by different degrees of itching, excessive scratching will aggravate the itching symptoms, so in the process of treatment must keep the skin clean, avoid too much stimulation and scratching. Due to the different physical condition of individuals, there will be some differences in the treatment effect, the specific medication must follow the doctor’s instructions.