The epidemiological data also reveals information regarding the most common way that symptoms develop in people with nephrotic syndrome: spontaneous remission occurs in up to 20% or 30% of cases during the first year of the illness. However, this improvement is not definitive as some 50% to 60% of people with Nephrotic syndrome die and / or develop chronic kidney failure 6 to 14 years after this remission. On the other hand, between 10% and 20% of people have continuous episodes of remissions and relapses without dying or jeopardizing their kidney. The main causes of death are cardiovascular, as a result of the chronicity of the syndrome, and thromboembolic accidents.