What causes occult blood in urine?

Under normal circumstances, occult blood in urine may be caused by urethral trauma, urinary tract infection, bladder stones, nephrotic syndrome, glomerulonephritis, or other reasons. It is recommended to seek medical attention promptly and follow the doctor's advice for appropriate management. Specific analysis is as follows:

1. Urethral trauma: Urethral irritation or injury may lead to urethral trauma, commonly due to foreign body insertion, physical injury, surgery, or other mechanical factors. When the urethra is damaged, red blood cells may leak from the injured site into the urine, resulting in occult blood. Medical evaluation is necessary, and doctors may perform disinfection to prevent infection.

2. Urinary tract infection (UTI): A UTI occurs when bacteria invade the urethra, bladder, or kidneys. The infection causes inflammation and congestion in the urethra, bladder, or kidneys, which can lead to occult blood in urine. Symptoms may be relieved with medications such as ciprofloxacin hydrochloride tablets, cefuroxime axetil tablets, or levofloxacin tablets, as directed by a physician.

3. Bladder stones: Bladder stones are hard mineral deposits formed in the bladder from substances in the urine. These stones may irritate the bladder wall, causing bleeding and leading to occult blood in urine. The severity of hematuria may depend on the size and location of the stone. Treatment may include medications such as amoxicillin capsules, lithotripsy granules, or levofloxacin tablets, as prescribed by a doctor.

4. Nephrotic syndrome: Nephrotic syndrome refers to a group of symptoms and signs associated with glomerular diseases. This condition may damage the glomerular filtration membrane, allowing red blood cells to pass into the urine, thereby causing occult blood. Medications such as hydrochlorothiazide tablets, torasemide tablets, or cyclophosphamide tablets may be used under medical supervision to alleviate symptoms.

5. Glomerulonephritis: Glomerulonephritis is an inflammatory disease affecting the glomeruli. Inflammation and damage to the glomeruli may allow red blood cells to leak into the urine, manifesting as occult blood. Treatment may involve medications such as erythromycin tablets, furosemide injection, or methylprednisolone tablets, as directed by a healthcare provider.

In daily life, it is recommended to maintain a light diet, drink plenty of water, and urinate promptly, all of which help support urinary system health.