Purple urine signals hidden infection, not drugs, in Thai man

An 80-year-old Thai man experienced sudden confusion, which led his family to bring him to the hospital. Upon examination, doctors discovered his urine had turned purple, a phenomenon known as purple urine bag syndrome. The man had a history of high blood pressure, severe knee arthritis, and an enlarged prostate, which contributed to his bathroom difficulties.

Over the course of two weeks, his symptoms worsened, including frequent urination, weak flow, and straining. Doctors discovered he was drowsy and moving slowly, resembling Parkinson's disease. To determine the cause, they inserted a catheter to drain his urine, which was initially yellow and normal. Two days later, the urine bag had turned deep purple, coinciding with the onset of his confusion.

Blood tests revealed a high white blood cell count, and a urine test showed a high bacterial count, along with low acidity. The infection was traced to two bacteria: Morganella morganii and Enterococcus faecalis. After receiving antibiotics through an IV drip, replacing the catheter and treating dehydration, his symptoms improved within a few days.

This case highlights that older individuals with urinary infections may not display typical signs like fever or pain, but rather confusion or worsening memory. The purple urine itself is not dangerous, but it can signal an underlying infection.