Kidney disease syndrome is classified as what disease?

Written by Zhang Hui

Nephrology

Updated on September 28, 2024

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Nephrotic syndrome is a clinical subtype of chronic kidney disease. It can be diagnosed when there is significant proteinuria, hypoalbuminemia, accompanied by edema and hyperlipidemia. This represents a severe stage in the progression of kidney diseases, generally requiring treatment with steroids and immunosuppressants. Nephrotic syndrome may have complications such as thrombosis, infections, hyperlipidemia, and acute renal failure.

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Written by Zhou Qi

Nephrology

44sec

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Is nephrotic syndrome prone to recurrence?

Nephrotic syndrome is characterized by more than 3.5 grams of proteinuria in 24 hours and a serum albumin concentration lower than 30 grams per liter. Treatment of this disease should be aimed at the cause, with most patients suffering from primary nephrotic syndrome related to immune dysfunction, therefore often requiring treatment with steroids. Indeed, some patients easily experience relapses; after a period of steroid treatment, proteinuria may decrease or even turn negative. However, upon cessation of the medication or during occurrences like a cold, some patients may suffer from relapses. Not all patients respond this way, as some are dependent on steroids.

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Written by Zhou Qi

Nephrology

53sec

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Causes of edema in nephrotic syndrome

Edema is a diagnostic criterion for nephrotic syndrome, as well as a major clinical symptom and characteristic of the syndrome. There are several reasons why patients develop edema. First, a large amount of protein leaks out from the kidneys, causing a decrease in the concentration of plasma albumin and a decrease in the colloid osmotic pressure in the plasma, which makes it easy for water to move from inside the blood vessels to outside, causing edema. Second, patients with nephrotic syndrome have increased vascular permeability, which also makes it easy for water to enter the interstitial tissues. Among patients with nephrotic syndrome, some are prone to acute renal failure, which further decreases the kidney's ability to excrete water, and these factors together lead to the common occurrence of edema in patients.

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Written by Wu Ji

Nephrology

48sec

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Criteria for the diagnosis of nephrotic syndrome

The diagnostic criteria for nephrotic syndrome include massive proteinuria, with urinary protein greater than 3.5 grams/day, hypoalbuminemia, with plasma albumin less than 30 grams/liter, severe edema, and hyperlipidemia, which includes significant increases in plasma cholesterol and triglycerides. The first two criteria are essential for the diagnosis of nephrotic syndrome, while the latter two are secondary. Clinically, if the two necessary criteria are met, the diagnosis of nephrotic syndrome is established. Patients with nephrotic syndrome should undergo a renal biopsy to determine the pathological type and guide clinical treatment.

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Written by Zhou Qi

Nephrology

40sec

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Does nephrotic syndrome cause itchy skin?

Nephrotic syndrome generally does not cause itchy skin in patients. In patients with nephrotic syndrome, the glomerular filtration barrier is severely damaged, leading to a significant presence of urinary protein and edema, but itchy skin is a rare clinical symptom. If a patient experiences itchy skin, it is recommended to visit the dermatology department of a standard hospital. As such patients may have a disordered immune system, they are prone to various skin issues, such as allergic dermatitis and eczema, which might cause symptoms of itchy skin. However, these are not directly related to nephrotic syndrome.

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Written by Niu Yan Lin

Nephrology

42sec

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Does nephrotic syndrome require a puncture?

Nephrotic syndrome is a complex of clinical symptoms with various causes, which differ by age group. In children or adolescents, if it presents solely as significant proteinuria without elevated creatinine or hematuria, it is generally caused by minimal change disease. Since this type of kidney disease is sensitive to hormone treatment, it is usually possible to forego renal biopsy and start with corticosteroid therapy. For other nephrotic syndrome patients, it is advisable to first perform a renal biopsy to identify the pathological cause before considering appropriate treatment with hormones, immunosuppressants, and other medications.