What causes urine blood after running?

After running, urinary blood is caused by physiological factors, bladder stones, urethritis and other reasons. The specific analysis is as follows:

1. Physiological factors

If the patient runs violently, the urethral mucosa is damaged during running, causing bleeding, and then with urine excretion, urinary blood appears.

2. Bladder stones

If the patient has bladder stones, resulting in friction between stones and bladder mucosa during running, the above phenomenon occurs.

3. Urethritis

The urethral mucosa of patients with urethritis becomes fragile under the stimulation of inflammatory reaction, so that during running, the mucosa is stimulated, causing capillary rupture at the mucosa, resulting in urinary blood.