There are many causes of secondary nephrotic syndrome, such as systemic disease, metabolic disease, allergic disease, infectious disease, nephrotoxic substance, malignant tumor, hereditary disease, gestational toxemia and chronic rejection of renal transplantation and many more. However, only a few common in clinical practice, such as systemic lupus erythematosus kidney, diabetic nephropathy, renal amyloidosis, allergic purpura nephritis are more common.
(1) systemic lupus nephropathy is common in young women, often manifested as multiple tube damage, such as joint pain, fever, facial butterfly erythema, liver and cardiovascular system lesions. Lupus erythematosus cells can be found in the blood, plasma globulin was significantly higher.
(2) Diabetic nephropathy is more common in long history diabetic patients, diabetic retinopathy, often parallel to kidney damage.
(3) Renal amyloidosis mainly occurs in middle-aged men and women, often have chronic inflammation or chronic suppurative disease lesions.
(4) purpura nephritis occur in adolescents, the incidence and respiratory tract infection, winter is more common, hematuria is the most common renal manifestations of allergic purpura renal damage.
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