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3. Blood in the urine
People with kidney or urinary tract stones have also a common symptom of blood in the urine. This condition where there is any blood in the urine is termed as hematuria. In this condition the color of urine becomes red, brown or pinkish, it is clearly visible and can be seen with naked eyes.In some cases red blood cells are not visible with the naked eye as the blood cells are too small to be examined, so they can be seen under a microscope only, this condition is known as microscopic hematuria.
