Koilonychia

Koilonychia
Other names: Spoon nails
Koilonychia
SpecialtyDermatology

Koilonychia, also known as spoon nails,[1] is a nail disease that can be a sign of hypochromic anemia, especially iron-deficiency anemia.[2]: 656 [3] It refers to abnormally thin nails (usually of the hand) which have lost their convexity, becoming flat or even concave in shape.[4][5]

In early stages nails may be brittle and chip or break easily.

Koilonychia is associated with Plummer–Vinson syndrome and iron deficiency anemia. It has also been associated with lichen planus, syphilis, and rheumatic fever. The term is from the Greek: κοῖλος, koilos, "hollow", ὄνυξ, onyx, "nail".

Even though Koilonychia has been associated with iron deficiency in case reports, it is more likely seen as an occupational change in nails and may be idiopathic; ruling out iron deficiency anemia in these patients is the only work-up necessary in this condition.[6]

  • Koilonychia
    Koilonychia
  • Koilonychia
    Koilonychia

See also

References

  1. ↑ James, William D.; Elston, Dirk; Treat, James R.; Rosenbach, Misha A.; Neuhaus, Isaac (2020). "33. Diseases of the skin appendages". Andrews' Diseases of the Skin: Clinical Dermatology (13th ed.). Edinburgh: Elsevier. p. 781. ISBN 978-0-323-54753-6. Archived from the original on 2022-04-16. Retrieved 2022-07-01.
  2. ↑ Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
  3. ↑ Kumar, Robbins and Cotran: Pathologic Basis of Disease, 7th ed., 2005. Saunders.
  4. ↑ MacGilchrist, Claire (2020). "3. The skin and nails in podiatry". In Burrow, J. Gordon; Rome, Keith; Padhiar, Nat (eds.). Neale's Disorders of the Foot and Ankle (9th ed.). Elsevier. p. 52. ISBN 978-0-7020-6504-0.
  5. ↑ Bellet, Jane Sanders (2021). "Paediatric nail disorders". In Lipner, Shari (ed.). Nail Disorders: Diagnosis and Management, An Issue of Dermatologic Clinics. Philadelphia: Elsevier. p. 231. ISBN 978-0-323-70923-1. Archived from the original on 2022-07-02. Retrieved 2022-07-01.
  6. ↑ Rich P. Stratman E, Corona R (eds.). "Overview of nail disorders". UpToDate. Waltham MA. Archived from the original on December 26, 2017. Retrieved April 27, 2020.
Classification
External resources


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