1. renal symptoms include:
① rashes, bleeding and symmetry of the distribution. When red blotchy rash early, the pressure may disappear, then gradually becomes purple hemorrhagic rash, slightly elevated skin surface. Symmetry rash often located in the lower limbs, the ankle, the knee around the more common, seen in the buttocks and upper limbs. It can be transformed into a yellow-brown rash subsided. Most cases of rash may have 1 or 2 times repeated up to three times, the individual continuous attack for several months or even years.
② joint symptoms, most with multiple migratory joint pain is characterized. Commonly affected joints are knees, ankles and hands. More than a few days the symptoms subside, not left joint deformity.
③ gastrointestinal symptoms, the most common abdominal pain, mainly in the lower abdomen and Cullen, paroxysmal colic. It may be accompanied by nausea, vomiting and bloody diarrhea, and occasionally vomiting. Children can sometimes be complicated by intussusception, intestinal obstruction and intestinal perforation.
④ other symptoms, such as swollen lymph nodes, liver and spleen, pulmonary hemorrhage caused by a small number of hemoptysis, nephritis induced hypertensive encephalopathy or brain lesions caused by purpura convulsions, paralysis and coma.
2. Kidney symptoms:
After the rash more common in 4 to 8 weeks after few several months. Individual seen two years ago after a rash or a rash. The most common manifestations of isolated hematuria, China reported 1/4 to 1/2 cases showed gross hematuria. Proteinuria mostly minor, but may also develop into a massive proteinuria and nephrotic syndrome. There may be a few cases of acute deterioration of renal function. Some patients may have high blood pressure and edema.