Congenital dyserythropoietic anemia (CDA) is a rare inherited blood disorder that affects the production of red blood cells. There are several synonyms for CDA, including congenital erythropoietic porphyria, Gunther disease, and erythroblastic anemia. These terms describe the same condition but may be used interchangeably depending on the context and the healthcare professional. Symptoms of CDA may include fatigue, weakness, and pale skin, but the severity can vary from person to person. Treatment may involve blood transfusions, iron supplements, and bone marrow transplants in severe cases. More research is needed to better understand the causes and potential treatments for this rare genetic disorder.