A Rare Case: Purple Urine Bag Syndrome

ABSTRACT Purple Urine Bag Syndrome (PUBS) is a rare condition resulting from the interaction of indigo (blue) and indirubin (red) pigments—produced via various metabolic pathways from tryptophan—with polyvinyl chloride (PVC) in urinary catheters. Constipation plays a significant role in the pathogenesis. In addition, it may occur in patients with urinary tract infections or those with long-term indwelling bladder catheters. Although it is generally a benign clinical condition, it may be an early indicator of a serious urinary tract infection. Keyswords: Purple Urine Bag, Constipation, Urinary Tract Infection.