List of what causes proteinuria and conditions for which proteinuria symptoms are related. If you want to know, "Why do I have proteinuria?" consider that proteinuria can be caused by a number of illnesses. This is a list of diseases that proteinuria is a symptom of, including diseases associated with proteinuria. What diseases cause proteinuria? Examples include Glomerulonephritis and Nephrotic syndrome. This list of diseases with proteinuria as a symptom is in alphabetical order with images when available, though it can also be sorted. If you could say "I am experiencing proteinuria," please consult a physician.