Suddenly the body like a mosquito bite bag to consider a variety of circumstances, 1, papular urticaria: also known as acute simple itchy rash, and insect bites and certain food-induced allergic reactions and other related. The rash is characterized by a pimple-like papule, the tip of which can be seen as a pinhead-sized blister or punctate blood crust, usually with intense itching, you can choose to take oral antihistamines, common ones such as epinastine, loratadine, etc. Local glucocorticoids can be rubbed externally, such as mometasone furoate cream. 2, urticaria: the rash of urticaria is characterized by The red bumps, which can be round, oval or irregular in shape, can subside on their own within 24 hours and leave no trace after they subside. You can choose to take oral antihistamines, such as chlorpheniramine, cetirizine, etc., and topical rubbing of furnace glycerine lotion.