Insect bites appear red and swollen is not suitable for the application of anthrone, because anthrone contains volatile base, after application will produce an irritating reaction to the red and swollen rash area, appearing red and swollen aggravated, and even vesicles, exudate, pain and other performance. If there is a mosquito bite redness, you can choose a mild non-irritating solution local wet compress, such as boric acid solution or 0.9% sodium chloride cold wet compress, shrink the superficial dermal capillaries, reduce the inflammatory reaction around the blood vessels. At the same time with oral olopatadine hydrochloride tablets or Epinastine hydrochloride capsules, to be most of the redness and swelling subsided, the color darkened, apply dexamethasone acetate ointment mixed with chloroiodohydroxyquin ointment can be.