The performance of scabies is a generalized distribution of erythematous papules, with intense itching, obvious at night, almost no conscious symptoms during the day, easy to confuse with eczema, etc., specific identification methods are as follows: 1. The rash of scabies is similar to eczema, both can be papules, papules, surrounded by an inflammatory redness. However, generally eczema rarely accumulates the hidden parts such as finger crevices and genitalia, but scabies likes these parts of thin and tender skin, all of which are good parts. 2.Itching characteristics many skin diseases are itchy, but scabies is only active at night and is dormant during the day, so it is characterized by performance, not itchy during the day and abnormally itchy at night. 3, there is contagious scabies has a strong contagious, can be transmitted by living together, sleeping in the same bed, clothing together clean, etc., often the whole family together, should be alert. 4, scrotal nodules to male patients, scabies or characteristic scrotal nodule-like rash, itching is obvious, specific certain characteristics. 5, laboratory confirmation of diagnosis can be confirmed by scraping the dermis and placing it under a microscope to observe the method of looking for scabies. The performance of scabies has its own characteristics, and it is also easy to be misdiagnosed as eczema, and although the incidence is not high, the concept of this disease should be associated with the disease when there are characteristic symptoms to avoid missing the diagnosis.