Anemia is a medical condition in which the red blood cell count or hemoglobin is less than normal. The normal level of hemoglobin is generally different in males and females. For men, anemia is typically defined as hemoglobin level of less than 13.5 gram/100ml and in women as hemoglobin of less than 12.0 gram/100ml. For this reason, doctors sometimes describe someone with anemia as having a low blood count. A person who has anemia is called anemic.
In general, classified according to the size of the red blood cells, there are there major types of anemia:
1. Microcytic Anemia
It is called mycrocytic anemia if the blood cells are smaller than normal. The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).
2. Normocytic Anemia
3. Macrocytic Anemia