Pityriasis rosea is not a precursor to AIDS; AIDS patients can develop pityriasis rosea, but pityriasis rosea can also be associated with human herpes virus infection. Pityriasis rosea is a rose-colored macular, maculopapular lesion inflammatory skin disease, AIDS patients generally can appear skin and mucous membrane lesions, pityriasis rosea belongs to one of them, but patients with pityriasis rosea is not necessarily caused by AIDS, but also may be related to human herpesvirus, especially type 6 or type 7. Simple pityriasis rosea disease is self-limiting, while patients with AIDS disease may not only have symptoms of pityriasis rosea, but also often have symptoms of recurrent colds, fatigue, weight loss, diarrhea and other symptoms, and also often have symptoms of skin damage such as psoriasis, ichthyosis, hives and so on. When a patient suffers from pityriasis rosea, the cause of the disease can be clarified under the guidance of a doctor so that it can be treated aggressively.