What Caused This Man’s Weakness and Hematuria?

A 52-year-old black man with type 2 insulin-dependent diabetes mellitus presents to hospital suffering from significant weakness and nausea; he says he has had no appetite for the past week, but has not been vomiting. He reports seeing blood in his urine, and that his urinary output has decreased … He looks very ill but shows no signs of distress – he is mentally alert and aware of his surroundings. He does not use over-the-counter medications or herbal remedies, nor does he smoke, drink alcohol, or use any illicit drugs … read more