Can passing kidney stones cause bleeding?

I saw some blood in my urine today while trying to pass a 6mm stone and my heart literally skipped a beat. Has anyone else experienced this exact same thing? Is it normal to bleed a little, or is it a major emergency?

Yes, hematuria (blood in urine) is a classic symptom of nephrolithiasis. My urologist explained that the rough edges of the stone irritate the ureter walls as it descends. However, if the bleeding is heavy, accompanied by fever, chills, or an inability to pass urine, it points to a complication or infection and requires immediate emergency care.

Yes, kidney stones scraping against the urinary tract very commonly cause bleeding. If there is severe pain, high fever, or heavy bleeding, please see a doctor immediately.

Think of the kidney stone as a tiny, angry rock with spikes making its grand exit, so a little bleeding is bound to happen! It's super common, but if you feel like you are passing too much blood or the pain is making you cry, go see your doctor. Don't be a hero!

I completely understand how terrifying it is to see blood in your urine, I panicked so badly when it happened to me. But yes, as the stone moves, its sharp edges scratch the inner lining and cause bleeding. It is a very common symptom, but please let your doctor know to be safe.