Patient's question:
Here is the English translation of your text, with the newline characters kept as they are:Recently I've been feeling unwell, experiencing severe lower back pain, increased frequency of urination, and general swelling. What are the causes of nephrotic syndrome in children?
Doctor's answer:
Currently, the etiology of pediatric nephrotic syndrome is not yet very clear, but it is generally believed to be related to repeated infections, especially respiratory infections. Most people can develop the disease from the age of 10 months and continue to suffer until old age. Generally, very young patients may have hereditary congenital nephrotic syndrome, which is a special type. The etiology of primary nephrotic syndrome is still unclear. Test results suggest that autoimmune mechanisms, especially cellular autoimmune changes, may be related to the onset of the disease.