Pityriasis rosea in the clinical is a kind of pathogenesis is not very clear skin inflammation reaction, pityriasis rosea patient is has certain self-limiting, almost in six weeks later, can appear the symptom slowly remission situation. The vast majority of symptoms remission, patients can find appear in their own trunk, limbs on the light red red spots slowly fade in color, back to close to the normal skin color situation, and above originally attached fine scales, also will slowly fade and not so much. Patients can also find that the itching sensation that was originally associated with the entire course of the disease can be slowly reduced, and the degree of attacks is not as frequent. Other patients may not be very typical and may also have systemic symptoms, which often do not recur in the course of improvement.