<prompt> PSGN post strept. GN asso. with ?Subepithelial depositsNephritis along with acute Renal failureLow complement levelsAll  <response>: Ans. a i.e., Subepithelial deposits; b i.e., Nephritis along with acute renal failure; c i.e., Low complement levelsPSGN appears 1 to 4 weeks after a streptococcal infection of pharynx or skin impetigo.o Occurs most frequently in children 6 to 10 years of age, but adults any age can be affected.o The lesions are caused by immune complex deposition and activation of complement -- Complement level decreasesC3 and CHSO are decreased with normal C4 -- Complement level returns to normal in 6-8 weeks.o Clinically child presents with acute nephritic syndrome, i.e. hematuria, oliguric acute renal failure, azotemia, proteinuria, hypeension edema.RememberPSGN causes acute renal failure, but not chronic renal failure -- More than 95 of affected children eventually recover totally with conservative therapy. 