What does it mean to have blood in the urine?

Blood appearing in the urine, medically known as hematuria, may be caused by various factors. Hematuria can be classified into two types: gross hematuria (urine appears distinctly red or pink) and microscopic hematuria (red blood cells visible only under a microscope). The following are common causes: 1. Urinary tract infections: Such as urinary tract infections, bacterial infections can cause inflammation of the urethra, bladder, or kidneys, leading to hematuria. 2. Stones: Kidney stones or bladder stones may scratch the inner lining of the urinary tract during movement, causing bleeding. 3. Tumors: Urinary system tumors, such as bladder cancer or kidney cancer, can also cause hematuria. 4. Structural abnormalities of the urinary system: Such as congenital or acquired urethral abnormalities or urethral strictures. 5. Bladder or prostate problems: Such as cystitis, prostatitis, or benign prostatic hyperplasia. 7. Other factors: Vigorous exercise, medications (such as diuretics), blood disorders (such as leukemia), or certain systemic diseases (such as lupus) may also cause hematuria. If hematuria is detected, do not ignore it; seek medical attention promptly.