Abstract
Anaemia is among the most frequent diseases worldwide. It is a manifestation of common as well as serious conditions.
It can be caused by impaired red blood cell production, increased red blood cell destruction, or their significant loss due to bleeding. Based on erythrocyte size, anaemia is classified into microcytic, normocytic, and macrocytic.
This division aids in basic orientation as to the possible cause of anaemia and in decision making on further examination procedures. Sideropenic anaemia occurs most commonly; anaemia of chronic disease is most frequent in hospitalized patients.
Congenital or acquired haemolytic anaemias are also relatively frequent. Other causes of anaemia are uncommon, with some of them even being rare.