Why does kidney stones cause blood in urine?

A stone has a hard surface and may move through narrow parts of the urinary tract. Friction and pressure can disturb tiny blood vessels in the lining, allowing blood cells to enter the urine. Urine can look pink, red, brown, or remain its usual colour when the blood is only found on testing.

Blood in Urine is a very common presentation of Kidney Stones. It may happen with sharp side pain, abdominal discomfort, nausea, burning, or a frequent urge to urinate. Visible blood is not proof of a stone; infection, inflammation, injury, and other urinary conditions also need consideration.

Contact a clinician promptly if you see blood in urine, even if it occurs only once or stops. A urine test can look for blood and infection, and imaging may be used when a stone is suspected. The treatment plan depends on pain, the stone's position, whether urine drainage is affected, and your overall health.

Drink normally unless a clinician has advised a fluid restriction. If you pass a small solid fragment, keep it in a clean container if you have been asked to collect it. Report anticoagulant medicines, previous stones, or urinary surgery during the consultation.

Seek urgent care for blood in urine with fever, chills, severe pain, clots, inability to pass urine, fainting, or persistent vomiting. These signs need quick assessment for infection, a blockage, dehydration, or significant bleeding. Do not delay urgent help if you feel severely unwell.

Ask what tests are needed to confirm the source of blood, whether a stone is blocking urine flow, and which symptoms should trigger emergency care. Ask whether any of your current medicines can affect bleeding or pain management.