<prompt> Frequency of renal involvement in HSP ?20-408040-6010  <response>: Ans. is c i.e., 40-60The repoed incidence of renal involvement in HSP varies considerably between different studies.o This may be because of the different criteria used to describe the involvement the variability of the length used to follow up.o In different studies incidence of pediatric renal involvement in HSP was between 20-56 and in adults 50-78 