Hen Henoch purpura is not a serious disease, but if the patient has renal Henoch purpura or complications such as purpura nephritis, it is also a serious disease. 1. Henoch purpura is generally not a serious disease, Henoch purpura is self-limiting, after a period of time will be self-healing, there are also patients after timely and regular treatment, the prognosis is better. 2. However, for patients with renal purpura, it is a more serious disease, which is a big disease. If patients with purpura are not treated in time, complications such as purpura nephritis may occur, which is also a more serious disease, and in severe cases may develop into uremia, which is also a serious disease. The allergic purpura is not a big disease can not be generalized, the patient should go to the hospital in a timely manner, under the guidance of the doctor to take regular treatment. Patients can achieve better results after treatment, but if not treated in time, it may aggravate the patient’s condition.