Wilson’s disease: A rare genetic disorder causing toxic copper buildup in the liver and brain. Early diagnosis and lifelong treatment are crucial.

Hemolytic uremic syndrome (HUS): A rare but serious condition causing red blood cell damage, low platelets, and kidney failure. Early diagnosis is key.

Hemoglobinuria: Red urine from free hemoglobin, not whole RBCs. Signals serious issues like hemolysis. Prompt diagnosis is vital.

Hematuria: Blood in urine, gross (visible) or microscopic. Could signal infection, stones, or more serious issues.

Paroxysmal cold hemoglobinuria (PCH) is a rare autoimmune anemia. Cold exposure triggers red cell destruction, causing dark urine, back pain, and chills. Diagnosis relies on the Donath-Landsteiner test.

Paroxysmal nocturnal hemoglobinuria (PNH): An acquired blood disease where the immune system attacks red cells due to a mutation in the X chromosome.