Koilonychia is a malformation of the nails in which the outer surface is scooped out like the bowl of a spoon . Spoon nails are a sign of iron deficiency anemia or a liver condition known as hemochromatosis, in which your body absorbs too much iron from the food you eat. Koilonychia occurs in 5.4% of the patients with iron deficiency. It is thought to occur due to the upward deformation of lateral and distal portions of pliable iron deficient nail plates under mechanical pressure.
Koilonychia nails are treated by changing your diet or taking iron rich supplements such as Beans and lentils.
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