For most people, symptoms improve within a month, leaving no lasting problems. Recurrences are fairly common, however.

Complications associated with Henoch-Schonlein purpura include:

  • Kidney damage. The most serious complication of Henoch-Schonlein purpura is kidney damage. Occasionally the damage is severe enough that dialysis or a kidney transplant may be needed.
  • Bowel obstruction. In rare cases, Henoch-Schonlein purpura can cause intussusception — a condition in which a section of the bowel folds into itself like a telescope, which prevents matter from moving through the bowel.
Jul. 31, 2013

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