Glucose-6-Phosphate Dehydrogenase (G6PD) Deficiency: This condition is a common cause of hemolytic jaundice, especially in individuals of Mediterranean, African, or Asian descent. It leads to hemolysis upon exposure to certain medications or foods, resulting in jaundice and potentially hemoglobinuria, which could be mistaken for RBC in urine due to the similar appearance of hemoglobin and RBCs under certain conditions.

Autoimmune Hemolytic Anemia (AIHA): This condition involves the immune system producing antibodies against the patient's own red blood cells, leading to their destruction and resulting in jaundice and signs of hemolysis. RBCs in urine could be present if there's associated kidney damage.
Hereditary Spherocytosis: A genetic disorder affecting the red blood cell membrane, leading to early destruction of red blood cells and potentially causing jaundice and signs of hemolysis. Hemoglobinuria or RBCs in urine might be seen in severe cases.
Sickle Cell Disease: A genetic disorder that affects hemoglobin production, leading to abnormal red blood cells that can break down, causing jaundice and signs of hemolysis. Sickle cell disease can also cause renal damage, potentially leading to RBCs in urine.

Malaria: Although less common in certain regions, malaria is a critical diagnosis not to miss, as it can cause hemolysis, jaundice, and in severe cases, renal failure leading to RBCs in urine. Prompt treatment is necessary to prevent high mortality.
Thrombotic Thrombocytopenic Purpura (TTP) or Hemolytic Uremic Syndrome (HUS): These are rare disorders of the blood-coagulation system, resulting in hemolytic anemia, thrombocytopenia, and renal failure, which could explain the presence of RBCs in urine. They are medical emergencies requiring immediate treatment.
Paroxysmal Nocturnal Hemoglobinuria (PNH): A rare, acquired, life-threatening disease of the blood characterized by the destruction of red blood cells, bone marrow failure, and the potential for blood clot formation. It can cause hemolysis, jaundice, and hemoglobinuria.

Wilson's Disease: A genetic disorder that leads to copper accumulation in the body, potentially causing liver damage, hemolysis, and renal issues, which might result in jaundice and RBCs in urine.
Paroxysmal Cold Hemoglobinuria (PCH): A rare autoimmune disorder that causes sudden attacks of hemolysis after exposure to cold temperatures, potentially leading to jaundice and signs of hemolysis, including hemoglobinuria.
Alloimmune Hemolytic Disease of the Newborn (HDN): Although typically diagnosed in newborns, in rare cases, similar immune-mediated hemolysis can occur in adults, especially in the context of blood transfusions or pregnancy, leading to jaundice and signs of hemolysis.