II. Signs

  1. Concave or Spoon shaped nails

III. Causes

  1. Normal finding in infants
    1. Resolves within first 1-2 years of life
  2. Iron Deficiency Anemia
  3. Hypothyroidism
  4. Trauma
  5. Impaired peripheral circulation
  6. Systemic Lupus Erythematosus
  7. Hemochromatosis
  8. Raynaud's Disease
  9. Contact Dermatitis to petroleum-based solvent
  10. Nail-Patella Syndrome (Autosomal Dominant)
    1. Hypoplastic Patella - commonly dislocated
    2. Glaucoma
    3. Renal disease
    4. Musculoskeletal conditions

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Related Studies

Ontology: Koilonychia (C0221261)

Concepts Sign or Symptom (T184)
SnomedCT 66270006
Italian Coilonichia
Japanese さじ状爪, サジジョウソウ, サジジョウツメ
Czech Koilonychie
English nails spoon, spoon nails, koilonychia, nail spooning, spooned nails, Koilonychia, Spoon nails, Spoon-shaped nails, Koilonychia (disorder), spoon nail
Hungarian Koilonychia
Spanish coiloniquia (trastorno), coiloniquia, uña en cuchara, Coiloniquia
Portuguese Quiloníquia
Dutch koilonychie
French Koïlonychie
German Koilonychie