Slide show: 7 fingernail problems not to ignore
Spoon nails
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Spoon nails (koilonychia) are soft nails that look scooped out. The depression usually is large enough to hold a drop of liquid.

Often, 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. Spoon nails can also be associated with heart disease and hypothyroidism.
Jan. 30, 2018