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Heart failure is a serious condition caused by the heart failing to pump enough blood around the body at the right pressure.
Nephrotic syndrome occurs when the kidneys do not work properly and leak large amounts of protein into the urine.
Our Health A-Z contains more information on the above symptoms.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.