People are bitten by fleas: at first there are spots of different sizes, which are higher than the skin and dark red. People with allergic skin will have a larger area, with obvious red spots and flea bites in the center, and the itching will last for several days. Use pesticides to destroy.

People are bitten by mites: the bite of mites is similar to that of mosquitoes, but it is not easy to retreat. It will take several days or even more than a week. Mite bites don't show anything, usually there are many red spots and lumps on the body. Demodex living in human body, if mite dermatitis, including mite acne, occurs due to excessive reproduction, can be killed by external use of sulfur ointment, sulfur lotion and metronidazole preparation.

Humanoid needs to pay attention to mites.

1, people who often work in air-conditioned rooms. Because the air conditioning filter screen is not cleaned on time, it is easy to breed mites.

2. Children, especially children. Because they are sensitive to mites and their secretions.

3. People who have a lot of outdoor activities, especially those who often move in grass or wet places.