Which symptoms suggest an alternative diagnosis to acute poststreptococcal glomerulonephritis (APSGN)?

Updated: Dec 05, 2018
  • Author: Rajendra Bhimma, MBChB, MD, PhD, DCH (SA), FCP(Paeds)(SA), MMed(Natal); Chief Editor: Craig B Langman, MD  more...
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Answer

The development of clinical nephritis (ie, hematuria and/or edema) either during or within 2-5 days after the onset of a respiratory tract infection is atypical and suggests the possibility of some other form of glomerulonephritis. Subclinical cases may be missed and are sometimes identified based on knowledge of the affected family or contacts. One report found APSGN in 20% of asymptomatic family members with the condition. [34, 54] Numerous case reports describe children who present with extreme manifestations, usually hypertensive encephalopathy, who do not display the typical urinary findings at presentation. [55] Serial examination of the urine after presentation may eventually confirm the suspicion of acute glomerulonephritis.

An insidious onset of edema is more indicative of other forms of renal disease.

An occasional child may have a scarlatiniform rash or evidence of a viral exanthema, but petechial or purpuric rashes suggest other conditions.


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