Final answer:
Pernicious anemia can be confused with iron deficiency anemia and megaloblastic anemia, which involve different nutritional deficiencies.
Step-by-step explanation:
Pernicious anemia, a condition caused by poor absorption of vitamin B12, can be confused with other types of anemia. One example is iron deficiency anemia, which can be caused by an inability to absorb or transport iron or slow, chronic bleeding.
Another disease that can be confused with pernicious anemia is megaloblastic anemia, which involves a deficiency of vitamin B12 and/or folate. This type of anemia often results from diets deficient in these essential nutrients.
It's important to distinguish between these different types of anemia through proper medical diagnosis to ensure appropriate treatment.