Red dots on the body is not necessarily AIDS, may be eczema, contact dermatitis and other diseases. 1. Eczema: the etiology of eczema is not clear, and it is considered to be caused by a variety of factors such as internal and external causes of the organism. The main symptoms of patients are erythema, pimples, etc., often accompanied by itching. 2. Contact dermatitis: contact dermatitis is mainly caused by exogenous substances that irritate the skin leading to allergic reactions, patients will appear in the contact area of erythema, papules, itching, burning, swelling and pain and other symptoms. 3. AIDS: AIDS is mainly caused by human immunodeficiency virus infection, AIDS patients may appear on the body red spots, but does not have specificity, and can not be diagnosed as AIDS. If you want to clarify whether you are infected with AIDS, you should improve the AIDS antibody, antigen or viral nucleic acid test. When the patient has the symptom of red dots on the body, he should consult a doctor in time and improve the relevant examination to make a clear diagnosis, so as to avoid delaying the condition.