Early symptoms of purpura are mainly manifested as skin damage symptoms of purpura simplex, digestive system damage symptoms of abdominal type, and large joint damage symptoms of arthritic type. 1. Early symptoms of purpura simplex: skin damage to the limbs, purpura is most common in the lower limbs and the roots of the thighs. Purpura distribution is symmetrical, localized with urticaria manifestations, the course of the disease recurrence, delayed. Purpura varies in shape, the color is mainly dark red, press hard, the color will not disappear pressure, usually within a few days to merge into a piece and then gradually become purple, yellowish, yellowish brown. 2. Early symptoms of abdominal purpura: symptoms of damage to the digestive system, common abdominal pain, vomiting, vomiting blood and blood in the stool and other symptoms. The first thing that patients usually show is paroxysmal abdominal pain, the nature of the pain is mostly colic, the pain site is concentrated in the umbilicus, lower abdomen or the whole abdomen, but the patient will not appear abdominal muscle tension, the symptom is often inconsistent with the physical examination. Young children with damaged intestines are prone to intussusception. 3. Early symptoms of arthritic purpura: impaired function of large joints as the main manifestation, symptoms of large joints wandering swelling and pain and activity disorders, knee and ankle joints, elbow joints, wrist joints are most often involved. The symptoms are recurrent but the joints are not deformed. It is recommended that patients go to regular hospitals for examination and treatment in a timely manner according to the symptoms of purpura, so as not to delay the condition and cause serious consequences.