What causes old women to urinate blood?

1. Urinary tract infection

When an elderly woman has urinary tract infection, pathogenic bacteria are easy to cause damage to the urinary tract mucosa, resulting in urinary blood, frequent urination, urgency and other symptoms.

2. Urinary system stones

If an elderly woman has urinary tract stones, urination will make stones active, causing urinary tract epithelial damage, causing bleeding.

3. Lupus nephritis

If an elderly woman has lupus nephritis, it will make the immune system abnormal, causing the body to produce antibodies against autologous kidney tissue, causing kidney damage, causing urinary blood.