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==Epidemiology and Demographics==
==Epidemiology and Demographics==
===Age===
Nephrotic syndrome may affect children and adults alike. There is no age or ethnic predominance. According to observational studies, the prevalence in children has a 2 to 1 male to female ratio. In adults, however, the prevalence is the same in both genders. In total, the incidence of nephrotic syndrome is the same for adults and for children. Idiopathic nephrotic syndrome has an incidence of 2-7 cases per 100,000 and a prevalence of 16 cases per 100,000.<ref name="pmid12944064">{{cite journal| author=Eddy AA, Symons JM| title=Nephrotic syndrome in childhood. | journal=Lancet | year= 2003 | volume= 362 | issue= 9384 | pages= 629-39 | pmid=12944064 | doi=10.1016/S0140-6736(03)14184-0 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12944064 }} </ref>
* Nephrotic syndrome can affect all age groups. In children, it is most common from age 2 to 6.
 
===Gender===
Approximately 70-90% of children less than 10 years of age with nephrotic syndrome are diagnosed with minimal change disease (MCD), a common form of primary glomerulonephritis characterized by normal glomeruli on light microscopy and by podocyte effacement on electron microscopy.<ref name="pmid17995521">{{cite journal| author=Cho MH, Hong EH, Lee TH, Ko CW| title=Pathophysiology of minimal change nephrotic syndrome and focal segmental glomerulosclerosis. | journal=Nephrology (Carlton) | year= 2007 | volume= 12 Suppl 3 | issue= | pages= S11-4 | pmid=17995521 | doi=10.1111/j.1440-1797.2007.00875.x | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17995521 }} </ref><ref name="pmid8829270">{{cite journal| author=Cameron JS| title=Nephrotic syndrome in the elderly. | journal=Semin Nephrol | year= 1996 | volume= 16 | issue= 4 | pages= 319-29 | pmid=8829270 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8829270 }} </ref><ref name="pmid4422336">{{cite journal| author=Cameron JS, Turner DR, Ogg CS, Sharpstone P, Brown CB| title=The nephrotic syndrome in adults with 'minimal change' glomerular lesions. | journal=Q J Med | year= 1974 | volume= 43 | issue= 171 | pages= 461-88 | pmid=4422336 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4422336 }} </ref> In older children, MCD still accounts for 50% of nephrotic syndrome.</ref><ref name="pmid8829270">{{cite journal| author=Cameron JS| title=Nephrotic syndrome in the elderly. |journal=Semin Nephrol | year= 1996 | volume= 16 | issue= 4 | pages= 319-29 | pmid=8829270 | doi= |pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8829270 }} </ref><ref name="pmid4422336">{{cite journal| author=Cameron JS, Turner DR, Ogg CS, Sharpstone P, Brown CB|title=The nephrotic syndrome in adults with 'minimal change' glomerular lesions. | journal=Q J Med |year= 1974 | volume= 43 | issue= 171 | pages= 461-88 | pmid=4422336 | doi= | pmc= |url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4422336 }} </ref> In adults, the prevalence of MCD is much lower. Adult-onset MCD only comprises 10-15% of all cases of MCD. On the other hand, the incidence of focal segmental glomerulosclerosis (FSGS) is higher, especially in African-American patients.<ref name="pmid4422336">{{cite journal| author=Cameron JS, Turner DR, Ogg CS, Sharpstone P, Brown CB| title=The nephrotic syndrome in adults with 'minimal change' glomerular lesions. | journal=Q J Med | year= 1974 | volume= 43 | issue= 171 | pages= 461-88 | pmid=4422336 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4422336 }} </ref>
* This disorder occurs slightly more often in males than females.
 
 
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}

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Epidemiology and Demographics

Nephrotic syndrome may affect children and adults alike. There is no age or ethnic predominance. According to observational studies, the prevalence in children has a 2 to 1 male to female ratio. In adults, however, the prevalence is the same in both genders. In total, the incidence of nephrotic syndrome is the same for adults and for children. Idiopathic nephrotic syndrome has an incidence of 2-7 cases per 100,000 and a prevalence of 16 cases per 100,000.[1]

Approximately 70-90% of children less than 10 years of age with nephrotic syndrome are diagnosed with minimal change disease (MCD), a common form of primary glomerulonephritis characterized by normal glomeruli on light microscopy and by podocyte effacement on electron microscopy.[2][3][4] In older children, MCD still accounts for 50% of nephrotic syndrome.</ref>[3][4] In adults, the prevalence of MCD is much lower. Adult-onset MCD only comprises 10-15% of all cases of MCD. On the other hand, the incidence of focal segmental glomerulosclerosis (FSGS) is higher, especially in African-American patients.[4]


References

  1. Eddy AA, Symons JM (2003). "Nephrotic syndrome in childhood". Lancet. 362 (9384): 629–39. doi:10.1016/S0140-6736(03)14184-0. PMID 12944064.
  2. Cho MH, Hong EH, Lee TH, Ko CW (2007). "Pathophysiology of minimal change nephrotic syndrome and focal segmental glomerulosclerosis". Nephrology (Carlton). 12 Suppl 3: S11–4. doi:10.1111/j.1440-1797.2007.00875.x. PMID 17995521.
  3. 3.0 3.1 Cameron JS (1996). "Nephrotic syndrome in the elderly". Semin Nephrol. 16 (4): 319–29. PMID 8829270.
  4. 4.0 4.1 4.2 Cameron JS, Turner DR, Ogg CS, Sharpstone P, Brown CB (1974). "The nephrotic syndrome in adults with 'minimal change' glomerular lesions". Q J Med. 43 (171): 461–88. PMID 4422336.

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