Final answer:
The treatment for Paroxysmal nocturnal hemoglobinuria is eculizumab, a terminal complement inhibitor designed to prevent the immune system-mediated destruction of red blood cells.
Step-by-step explanation:
The treatment for Paroxysmal nocturnal hemoglobinuria (PNH) is eculizumab, which is a terminal complement inhibitor. This medication works by inhibiting the complement system that forms part of the immune response, thereby preventing the destruction of red blood cells characteristic of PNH. While options such as blood transfusions, bone marrow transplants, and chemotherapy might be used in other conditions, eculizumab is specifically tailored to treat PNH.