It is possible for Henoch-Schönlein purpura to develop into a kidney type of disease.
A proportion of patients with purpura allergic manifests as purpura simplex, which starts with initial skin lesions such as the appearance of hemorrhagic spots, but may progress further to cause lesions in the kidneys as well.
On the basis of skin purpura, hematuria, proteinuria and tubular urine appear due to the inflammatory reaction of glomerular capillary collaterals, and occasionally edema, hypertension and renal failure are seen. Renal damage most often occurs 2-4 weeks after the appearance of purpura, or delayed appearance. Most patients can recover completely, and a few cases evolve into chronic nephritis and renal insufficiency due to repeated attacks.
Patients with purpura are advised to consult regular hospitals for standardized treatment under the guidance of physicians.