There is usually no direct relationship between red dots on the legs and AIDS, which can present as red dots on the lower extremities. If there are red spots on the legs, they may also come from a variety of diseases other than AIDS. AIDS is a chronic infectious disease caused by human immunodeficiency virus infection. Early after HIV infection, there can be some clinical manifestations, these symptoms are more, involving multiple parts and systems, and some patients may have a skin rash. Some patients may have skin rashes. If you have red spots on your legs and consider a skin rash, you should be careful to rule out the possibility of AIDS. In addition, the diagnosis of AIDS requires a combination of indicators, to clarify whether there is a high-risk history of HIV exposure, such as whether there has been a history of unclean sexual contact, and to pay attention to further testing to rule out. Laboratory tests, such as blood tests for antigens, antibodies, or viral nucleic acids, can be used to rule out AIDS. If there are red spots on the legs, it is also important to rule out the possibility of thrombocytopenic purpura or other skin diseases, and further management will be based on the results.