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THKoilonychia (Spoon Nails) — FNP Board Review Caption
Koilonychia refers to thin, concave nails that appear “scooped out,” resembling a spoon. While it may seem like a cosmetic finding, it is often a clinical clue to systemic disease — and boards love it.
🔍 What You See
• Nails are soft, thin, and concave
• Central depression with upturned edges
• May hold a drop of water
• Often affects fingernails more than toenails
💡 Early finding: nail plate thinning before concavity develops.
🧠 Most Common Cause — TEST FAVORITE
👉 Iron Deficiency Anemia
This is the #1 association and the first thing you should evaluate.
Why it happens:
Iron is essential for epithelial cell growth and nail plate integrity → deficiency leads to fragile, malformed nails.
🩺 Associated Symptoms to Ask About
Because the nail finding is a clue — not the diagnosis.
Iron deficiency clues:
• Fatigue
• Pica (ice craving — boards love this)
• Pallor
• Glossitis
• Angular cheilitis
• Dyspnea on exertion
🧪 Workup
If koilonychia is present, evaluate for iron deficiency:
• CBC → microcytic anemia
• Low ferritin (most specific)
• Low serum iron
• Elevated TIBC
• Low transferrin saturation
🎯 Board Pearl
👉 Spoon nails = check iron first.
If the question mentions:
• Concave nails
• Fatigue
• Pica
→ Think iron deficiency anemia
📌 Clinical Insight
Nails are a window into systemic health. Recognizing subtle findings like koilonychia can lead to early detection of anemia and prevent complications. #fnp #anemia #medical #studywithme fnpreview
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