Symptoms of kidney disease can vary from person to person. Some people with kidney disease may not even feel sick, or they may not notice their symptoms.

If the kidney function fails, the waste products accumulate in the blood and the body, termed azotemia. Very mild levels of azotaemia may produce little or no symptoms, but if the kidney failure continues then symptoms will become noticeable (if the failure is of sufficient degree to cause symptoms). Renal failure accompanied with noticeable symptoms is termed uraemia.

   Symptoms of kidney failure include:

   * High levels of urea in the blood, which can result in:

   - Vomiting and/or diarrhea, which may lead to dehydration

   -  Nausea

   - Weight loss

   - Nocturnal urination

   - Foamy or bubbly urine

   - More frequent urination, or in greater amounts than usual, with pale urine
 
    - Less frequent urination, or in smaller amounts than usual, with dark coloured urine
 
    - Blood in the urine
 
    - Pressure, or difficulty urinating