The characteristics of AIDS rash are divided into two periods, which are described as follows: 1. Viraemia period: At this time, the rash characteristics are not specific, it may be a generalized maculopapular rash or a localized erythema or papule, and there are usually no conscious symptoms, no itching or pain. If left untreated, it can subside on its own after about 1-3 weeks; 2. AIDS onset period: a more serious than normal ringworm may appear, with scaly erythema and herpes with relatively clear borders, and even sometimes a generalized herpes all over the body. There is also severe seborrheic dermatitis, with scaling and erythema on the nose and scalp, and the scaling is more severe than normal. There are also manifestations like a syphilitic rash that can appear as a patchy rash on the trunk or palmoplantar areas without any symptoms. During the onset the rash will get worse if not treated and usually does not heal on its own, so you need to go to a dermatologist for targeted treatment of the pathogen before the rash will gradually get better.