I was bitten by a mite when I lived outside. There is no reason at home. I live outside today, because the training environment is not good, and now I can't sleep.
This has something to do with the uncleanness of your room and the presence of mites. I suggest you take three drops of electric acaricide with you, close the doors and windows and open them when you sleep. After returning home, you can completely kill mites in your body and room, so that there will be no more problems with mites.