<P> In microcytic anaemia, the red blood cells (erythrocytes) are usually also hypochromic, meaning that the red blood cells appear paler than usual . This is reflected by a lower - than - normal mean corpuscular hemoglobin concentration (MCHC), a measure representing the amount of hemoglobin per unit volume of fluid inside the cell; normally about 320 - 360 g / L or 32 - 36 g / dL . Typically, therefore, anemia of this category is described as "microcytic, hypochromic anaemia". </P> <P> Typical causes of microcytic anemia include: </P> <Ul> <Li> Childhood <Ul> <Li> Iron deficiency anemia, by far the most common cause of anemia in general and of microcytic anemia in particular </Li> <Li> Thalassemia </Li> </Ul> </Li> <Li> Adulthood <Ul> <Li> Iron deficiency anemia </Li> <Li> Sideroblastic anemia, In congenital sideroblastic anemia the MCV (mean corpuscular volume) is either low or normal . In contrast, the MCV is usually high in the much more common acquired sideroblastic anemia . </Li> <Li> Anemia of chronic disease, although this more typically causes normochromic, normocytic anemia . Microcytic anemia has been discussed by Weng et al . </Li> <Li> Lead poisoning </Li> <Li> Vitamin B (pyridoxine) deficiency </Li> </Ul> </Li> </Ul> <Li> Childhood <Ul> <Li> Iron deficiency anemia, by far the most common cause of anemia in general and of microcytic anemia in particular </Li> <Li> Thalassemia </Li> </Ul> </Li>

What are the causes of microcytic hypochromic anemia
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