Usually, HIV rash is characterized by non-infectious lesions, infectious lesions and skin tumors. 1. Non-infectious skin lesions: this kind of rash is not caused by infection but by HIV, which is round or oval in shape, with dark red or deep red spots and papules in varying numbers. It is usually not accompanied by itching or pain, slightly elevated, and the color disappears when pressed by hand. 2. Infected lesions: HIV patients with low immunity are prone to infections that cause rashes, and at this time, the patient’s symptoms are more serious. Infected skin lesions will appear itching, pain and other symptoms, will not go away on its own, and last for a long time. 3. Skin tumors: Some HIV patients will cause skin tumors, which manifest as mauve or brown patches and plaques, and may further develop into hemorrhagic lesions and nodules. This rash may ulcerate and is usually large and widespread. In addition, there are other characteristics of HIV rash, it is recommended that HIV patients with rash must promptly go to the hospital to identify the cause of the disease, and under the guidance of the doctor to deal with it.