The main difference between eczema and AIDS is the cause of the disease as well as the symptoms, but the final diagnosis needs to go to a regular hospital. 1. Eczema: Eczema is a common chronic, inflammatory, itchy skin disease, the specific cause of which is not clear, and is related to genetic, allergic, endocrine and other factors. Acute episodes can appear in any part of the body skin erythema, and accompanied by pimples, blisters, etc., at the same time, the patient will also appear obvious, intense itching, can be aggravated after drinking alcohol, scratching. 2. AIDS: AIDS is a contagious disease caused by human immunodeficiency virus infection, is also a sexually transmitted disease, according to the course of the disease can be divided into acute infection, asymptomatic period and AIDS period. In the acute infection period of AIDS, there will be sore throat, fever, nausea, vomiting, skin rash and other symptoms, which can generally subside on their own; and then enter the asymptomatic period, which generally lasts for several months to several years, and there are generally no symptoms in this period. Entering the AIDS stage, due to the severe impairment of the immune system, it is easy to combine various diseases, such as infections and tumors. Since AIDS patients may also suffer from eczema, symptoms cannot be used as a basis for judging AIDS infection, and the diagnosis or exclusion of AIDS must be examined in a regular hospital. To summarize, it is recommended that patients go to regular hospitals, complete the examination, clarify the diagnosis, and carry out treatment under the guidance of doctors.