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What are the common causes of severe anaemia ?

Following are the common cause of severe anemia
  • Nutritional.
  • Hookworm infestation.(in developing countries)
  • Hemetemesis and melaena (commonly from chronic duodenal ulcer or rupture of oesophageal varices
  • Chronic bleeding haemorrhoids.
  • Aplastic anaemia.
  • Acute leukaemias.
  • Thalassaemia.
  • Uraemia.
  • Menorrhagia.
  • Carcinoma of stomach, lung, colon.
  • Blood Transfusion is usually required when haemoglobin level goes below 7 gm/dl.