Spoon-Shaped Fingernails With Red Spots or Lines

Spoon nails (koilonychia) are soft, scooped-out nails. Spoon nails are frequently an indication of iron deficiency anemia or hemochromatosis, a liver condition in which your body absorbs too much iron from the food you eat. But they've also been linked to vitamin C deficiency

Spoon-shaped nails have a concave shape and are usually thin and brittle. Splinter hemorrhage, or red spots or vertical lines in the nail bed, can occur as a result of weakened blood vessels that easily rupture during vitamin C deficiency. While the appearance of fingernails and toenails can help determine the likelihood of vitamin C deficiency, it should be noted that this is not a diagnostic test.