Acute nephritis and chronic nephritis can be distinguished by etiology, laboratory tests, prognosis and pathologic examination.
1. Etiology: acute glomerulonephritis, also called acute glomerulonephritis, is mostly caused by streptococcal infections; the vast majority of chronic nephritis develops from primary glomerular diseases of different etiologies, and only a few chronic nephritis develops from acute nephritis (directly delayed or reproduced after several years of clinical healing).
2. Laboratory examination: serum C₃ and total complement decrease in the early stage of acute nephritis, and gradually return to normal within 8 weeks.
3. Pathological examination: acute nephritis, if the blood creatinine continues to rise or the condition has not improved in 2 months, renal puncture biopsy should be performed in time; chronic nephritis renal pathology is mainly for thylakoid proliferative glomerulonephritis (including IgA and non-IgA thylakoid proliferative glomerulonephritis), thylakoid capillary glomerulonephritis, membranous nephropathy and focal segmental glomerulosclerosis, etc..
Patients with acute and chronic nephritis should go to the hospital in time to get a clear diagnosis and standardized treatment under the guidance of professional physicians.