What causes blood in urine

Urethral inflammation

can lead to redness and swelling of the inner wall of the urethra. In severe cases, it can also cause urethral mucosa to rupture and bleed, thus causing urinary blood.

2. Pyelonephritis

inflammation can cause blood vessels in the kidneys to be damaged, and blood vessels rupture and bleed into the urine, thus causing urinary blood.

3. Bladder

stones are solid crystalline substances formed in the bladder. When stones move in the bladder, they may scratch the bladder wall and cause bleeding. When blood and urine mix, urine blood will appear.