Having mites will cause mite dermatitis, which is mainly manifested as erythema, papules, itching and other symptoms. 1. Erythema: after having mites, edematous erythema of soybean or even broad bean size will appear on the local skin. 2. Papules: after the skin is bitten by mites, red papules will appear at the place of being bitten, there may be small blisters or pustules at the top, with bruises in the center of being bitten, and sometimes there may be a large blister or a wind ball, and the blisters may reveal bright red vesicles after they are ruptured. 3. Itching: after being bitten by mites, local skin has persistent itching, and the itching is intense and more prominent at night. There may also be fever, diarrhea, headache, general weakness and other systemic symptoms after having mites. In addition, scabies mites belong to a kind of mite, it is easy to bite the perineum, finger cracks and other thin and soft skin, can appear pinpoint-sized pimples, pimples, but also can be seen by the scabies mites dug out of the tunnel, with intense itching, especially at night. It is recommended that patients with suspected mite bite symptoms go to the hospital in time for treatment.