<prompt> Post streptococcal glomerulonephritis causes -Nephritic syndromePrimary Nephrotic syndromeSecondary Nephrotic syndromeChronic renal failure  <response>: Ans. is a i.e., Nephritic syndrome Causes of acute nephritic syndrome in children are :1 Primary glomerulonephritis : Acute glumerulonephritis post-streptococcal, RPGN, MPGN, focal GN and IgA nephropathy2 Systemic diseases : SLE, PAN Wegners granulomatosis, HSP, cryoglobulinemia.Post streptococcal glomerulonephritiso PSGN appears 1 to 4 weeks after a streptococcal infection of pharynx or skin impetigo. It is caused by certain nephritogenic serotypes of group A -hemolytic streptococcus not by all serotypeso The lesions are caused by immune complex deposition and activation of complement complement level decreaseso It occurs most frequently in children 6 to 10 years of ago Clinically child presents with acute nephritic syndrome :i Hematuriaii Oliguric acute renal failureiii Azotemiaiv Proteinuriav Hypertensionvi Edemao PSGN causes acute renal failure, but not chronic renal failure more than 95 of affected children eventually recover totally with conservative therapy. 