<prompt> In HSP gross hematurea is seen in what of children?5 - 1010 - 2020 - 3030 - 40  <response>: Ans. is c i.e., 20 - 30 Henoch-schonlein_purpura HSP Small vessel vasculitis Purpuric rash Ahritis Abdominal pain Glomerulonephritis Gross hematuria is seen in 20-30 of cases 