Mite dermatitis is usually manifested as persistent local itching, edematous erythema, papules, but due to the different types of disease-causing mites, such as dust mite dermatitis, chiggers mite dermatitis, etc., so the symptoms will be different and need to be analyzed specifically. 1. Dust mite dermatitis: patients with dust mite bites usually have persistent localized itching, accompanied by edematous erythema, papules, eruptions, pimples and other lesions, and petechiae produced by insect bites can be seen in the central position, and with the development of the disease, the discomfort may spread to the whole body. 2. Chiggers mite dermatitis: after being bitten by chiggers, some patients will have red pimples without obvious discomfort, but small blisters or pustules will appear at the top, and gradually increase to the size of a soybean; some patients will have obvious itching and burning sensation after being bitten, and edematous erythema of the size of a soybean or even a broad bean may appear, and a large area of redness and swelling or even a generalized wind. Mite dermatitis patients will also appear different degrees of fever, headache, fatigue, diarrhea and other discomforts and complications, should be promptly to the hospital for examination and diagnosis, clear cause of the disease under the guidance of a professional doctor combined with the personal situation of targeted treatment, to avoid delayed aggravation of the symptoms.