Koilonychia Symptoms & Signs
Medical Author: Melissa Conrad Stöppler, MD
Spoon-shaped or spooning fingernails refers to a concavity in the fingernail itself, resulting in a depression in the nail that gives an appearance of a spoon shape to the entire nail. This growth disturbance in the nail is medically known as koilonychia. The spooning is typically such that a water droplet may be placed and held in the depression within the nail. This pattern can sometimes be seen in normal infants, but it disappears as the child ages. Koilonychia is a component of the nail-patella syndrome, a genetic disease characterized by numerous abnormalities including musculoskeletal and kidney abnormalities. Spooning fingernails can also result from trauma, exposure to certain solvents, or it may be associated with chronic medical conditions. In particular, koilonychias is associated with iron deficiency.
Health concern on your mind? Visit the Symptom Checker.
Fawcett, Robert S., et al. "Nail Abnormalities: Clues to Systemic Disease." Am Family Physician 69.6 Mar. 15, 2004: 1417-1424.
Causes of Koilonychia
In This ArticleDiabetes (Type 1 and Type 2) Article
- Diabetes facts
- What is diabetes?
- How many people in the US have diabetes?
- 6 early signs and symptoms of diabetes
- How do I know if I have diabetes?
- What causes diabetes?
- What are the different types of diabetes?
- Type 1 diabetes
- Type 2 diabetes
- What are the other types of diabetes?
- How is diabetes diagnosed?
- Why is blood sugar checked at home?
- What are the acute complications of diabetes?
- What are the chronic complications of diabetes?
- What can be done to slow the complications of diabetes?
In This ArticleHemochromatosis (Iron Overload) Article
- What is hereditary hemochromatosis?
- How is hereditary hemachromatosis inherited?
- What are the symptoms and signs of hemochromatosis?
- How is hemochromatosis diagnosed?
- How is hemochromatosis treated?
- What about diet recommendations for people with hemochromatosis?
- What are the recommendations for screening for liver cancer in hemochromatosis?
In This ArticleIron Deficiency Article
- Iron and iron deficiency facts*
- What is iron and why do we need it?
- What is iron deficiency and why is it a concern?
- What causes iron deficiency?
- Who is most at risk for iron deficiency?
- What are the signs and symptoms of iron deficiency?
- How is iron deficiency diagnosed?
- How is iron deficiency treated?
- Can iron deficiency be prevented?
- Young children (aged 1-5 years)
- Adolescent girls and women of childbearing age
- Pregnant women
- How much iron do I need?
- What are dietary sources of iron?
- Dietary sources of Vitamin C
- Iron overload and hemochromatosis
In This ArticleLupus (Systemic Lupus Erythematosus or SLE) Article
- Systemic lupus erythematosus facts
- What is systemic lupus erythematosus? What are the types of lupus?
- What are risk factors and causes of systemic lupus erythematosus? Is lupus contagious? Is lupus hereditary?
- What is drug-induced lupus?
- What are lupus symptoms and signs?
- How is systemic lupus erythematosus diagnosed?
- What is the treatment for systemic lupus?
- Is there a systemic lupus erythematosus diet?
- How can a lupus patient help prevent disease activity (flares)?
- How can systemic lupus erythematosus affect pregnancy or the newborn?
- What specialties of doctors treat lupus?
- What is the prognosis of lupus? What does the future hold for people with systemic lupus?
- Where can one get more information about systemic lupus erythematosus?
Other Causes of Koilonychia
- Nail-Patella Syndrome
- Normal Infancy
- Protein Deficiency
- Toxins (Petroleum-Based Solvents)
Symptoms & Signs A-Z List
Find out what women really need.