Bleeding from the bladder, which appears as blood in the urine (hematuria).
From Greek 'kystis' (bladder) + 'rhegnynai' (to burst/break). The root 'rhag-' relates to rupture or hemorrhage.
While blood in the urine is alarming, cystorrhagia can have many causes from harmless to serious—it's the kind of symptom that always deserves medical investigation because it could signal anything from a urinary tract infection to cancer.
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