Chronic nephritis and acute glomerulonephritis without positive relations between, according to the clinical data of patients with chronic nephritis, only 15% -20% have a clear history of acute nephritis. The onset of chronic nephritis can be grouped into the following five kinds:

1, onset of acute glomerulonephritis, has not been completely controlled, clinical symptoms and the persistence of urinary protein, persisting for more than 1 year, and the evolution of chronic nephritis.

2, there was a comprehensive history of acute nephritis after several weeks or months after convalescence, clinical symptoms and the disappearance of urinary abnormalities, normal renal function. After quite a long interval (up to the elderly for many years), the result of upper respiratory tract or other infections or over exertion, the sudden appearance of proteinuria, edema, or (and) high blood pressure symptoms of nephritis.

3, the past history of non-nephritis due to upper respiratory tract or other infections, significant edema and proteinuria, such as a large number of symptoms of nephrotic syndrome.

4, the past history of non-nephritis, proteinuria in the short term, to hypertension and (or) renal insufficiency.

5, the past history of non-nephritis, often due to infection or hematuria after exertion and (or) proteinuria, the rest short-term to reduce or disappear soon after. So recurrent, without obvious clinical symptoms.

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