AIDS cannot be seen from the outside. Some people with AIDS do not have any symptoms and are usually in the incubation period, so it is impossible to tell if they have AIDS from their appearance. Some AIDS patients may show clinical symptoms such as fever, diarrhea, weight loss, skin rash, swollen lymph nodes and other signs during the onset of the disease, but you cannot judge AIDS based on these signs because there is no way to distinguish AIDS from other diseases in terms of symptoms and signs. Only if the antibodies are positive and the confirmatory test is also positive can the diagnosis be made.