Is nephrotic syndrome hereditary?

Written by Zhou Qi
Nephrology
Updated on September 08, 2024
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Nephrotic syndrome is generally not hereditary. It refers to a group of clinical symptoms and manifestations. The fundamental issue in patients is the damage to the glomerular capillaries, which leads to significant proteinuria, subsequently causing edema, hyperlipidemia, and hypoalbuminemia in the plasma. The causes of this disease are classified into primary and secondary types. Primary nephrotic syndrome is related to immune system dysfunction and may involve multiple genes; therefore, the disease is not considered a clear hereditary disease, but the likelihood of offspring developing renal issues may be higher than in the general population. Secondary nephrotic syndrome is mostly related to factors such as hepatitis B infection, allergies, diabetes, etc., and these diseases are not hereditary either.

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Written by Zhou Qi
Nephrology
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Syndrome of kidney disease with manifestations of calcium deficiency

In the state of nephrotic syndrome, if there is a calcium deficiency, it may cause the patient's limbs to twitch, especially sudden twitches and pain in both lower limbs during sleep at night, waking the patient from sleep. If calcium deficiency persists for a long time, it may lead to osteoporosis in the patient, such as osteoporosis of the femoral head, which presents with hip pain, and necrosis of the femoral head, potentially affecting the patient's ability to walk. In children, calcium deficiency may cause night-time convulsions, and external manifestations such as hunchback, pigeon chest, and square skull might appear.

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Written by Zhou Qi
Nephrology
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Why does nephrotic syndrome cause sleepiness?

Excessive sleepiness is not a common clinical manifestation of nephrotic syndrome; generally, patients with nephrotic syndrome rarely exhibit excessive sleepiness. If a patient does display sleepiness, it is necessary to investigate the causes, such as a reduction in blood volume and decreased blood pressure caused by nephrotic syndrome, leading to insufficient cerebral blood supply. Furthermore, in cases of nephrotic syndrome, the patient’s immune capacity decreases, making them more susceptible to various infections, such as infections of the upper respiratory tract and lungs. When inflamed, patients are also likely to feel excessively sleepy. In some patients, there is a risk of cerebral infarction, which can also cause sleepiness.

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Written by Zhang Hui
Nephrology
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Characteristics of Nephrotic Syndrome

The characteristics of nephrotic syndrome are defined by significant proteinuria, where significant proteinuria refers to urinary protein exceeding 3.5 grams in 24 hours; hypoproteinemia, which refers to blood albumin levels below 30 grams per liter; edema, which may present in facial and lower limbs, and even severe patients may exhibit generalized edema around both lower limbs; and hyperlipidemia, characterized by increased cholesterol and triglycerides in the blood. These patients may exhibit reduced urine output, edema, and noticeably increased foam in the urine.

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Written by Wu Ji
Nephrology
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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
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How long will it take for nephrotic syndrome to get better?

Most cases of nephrotic syndrome are primary nephrotic syndrome, which refers to the absence of specific causes and may be related to immune dysfunction. The disordered immune system attacks the glomerular capillaries causing damage to the filtration barrier, resulting in the patient excreting large amounts of urinary protein. For primary nephrotic syndrome, treatment generally involves the use of corticosteroids or a combination of hormones and immunosuppressants. About 50-60% of patients respond effectively to the medication, which typically takes about two months to take effect. Patients who respond quickly might see effects within one to two weeks, while those with less sensitivity to the medication may need three to four months. The general course of medication is about one year.