what causes spoon nails
Other Causes: Spoon-shaped nails. Some of the less common causes of Spoon-shaped nails may include: 1  Hemochromatosis. 2  Raynaud's disease. 3  SLE. 4  Trauma. 5  Nail-patella syndrome. 6  Physiologic occurrence in children.
Causes of Spoon-shaped nails without any prevalence information. The following causes of Spoon-shaped nails are ones for which we do not have any prevalence information. 1  Emanuel syndrome-spoon-shaped nails. 2  Hypothyroidism. 3  Inherited trait. 4  Iron deficiency.