Blood in the urine

Blood in the urine, also known as hematuria, is a symptom that occurs when red blood cells are present in the urine. It can range from a few drops to a large amount of blood and may be accompanied by pain, a burning sensation, or difficulty urinating. The color of the urine may be pink, red, or brownish, depending on the amount of blood present. The cause of hematuria can range from a urinary tract infection to a kidney stone or cancer.