Henoch-Schönlein purpura affects the kidneys, digestive tract and joints by causing the blood vessels to become inflamed and leak, according to The National Kidney and Urologic Diseases Information Clearinghouse. The primary symptom of this disease is a rash.
Henoch-Schönlein purpura is a curable disease that most commonly occurs in children between the ages of 2 and 6. Most recover from this disease. Lifelong kidney damage is the most common complication. In adults, Henoch-Schönlein purpura can lead to chronic kidney disease and failure, which may result in the individual needing a lifelong dialysis or a kidney transplant, according to The National Kidney and Urologic Diseases Information Clearinghouse.