Many diseases can cause secondary kidney damage. In addition to systemic lupus erythematosus, hypertension, diabetes, there are also anaphylactoid purpura, hepatitis B. In addition, some tumor diseases can also cause kidney diseases. Kidney diseases can be divided into three categories according to the etiology: primary, secondary and hereditary. Primary nephritis refers to those with unknown etiology. Secondary refers to kidney damage secondary to systemic diseases, such as lupus nephritis, diabetic nephropathy, hypertensive kidney damage, etc. Hereditary nephritis is a disease caused by genetic mutation, such as Alport syndrome. In addition, autosomal dominant polycystic kidney also belongs to hereditary kidney disease.
