Pityriasis rosea is generally a non - recurrent disease. Sometimes, even without treatment, it will heal on its own after a period of time. Therefore, it is also a self - limiting disease.However, due to individual differences, some people may experience the gradual disappearance of pityriasis rosea in a short period, but skin lesions of pityriasis rosea may reappear after some time. In fact, this doesn't mean that pityriasis rosea has been cured; it just indicates that the disease is still in the active stage, only that the course of the disease may be relatively long.The typical duration of this disease is about 4 to 6 weeks. For some individuals, the course may be shorter, around one month, or even two to three weeks. But for others, it may be longer, such as 8 weeks, or even over 10 weeks, and in some cases, skin lesions can last for more than half a year.