It's hot, what should I do if I itch?

There are several possibilities, 1, you are allergic, this day is easy to be allergic, and there are many pollen on the street. If this situation is not serious, you can eat more fruits to supplement vitamin C. If it is serious, go to the hospital to check allergens and try to avoid contact with allergens. 2, bacterial invasion, no matter whether the place where you live is wet or dark, clothes and quilts are best dried in the sun to avoid humidity breeding bacteria. 3, maybe it was bitten by a mosquito, you didn't notice. In this case, light mosquito-repellent incense before going to bed.