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koilonychia (spoon nails)
Etiology:
1) iron deficiency anemia
2) Plummer-Vinson syndrome
3) Raynaud's syndrome
4) hemochromatosis
5) chronic occupational injury
- chemical or physical trauma
6) diabetes mellitus [6]
7) systemic lupus erythematosus [6]
8) protein deficiency [6]
9) idiopathic inherited autosomal dominant disorder
Clinical manifestations:
- concave or spoon-shaped nails resulting from softening & thinning of the nail plate
* images [3,4,5]
Related
nail plate
General
nail disease
sign/symptom
References
- Color Atlas & Synopsis of Clinical Dermatology, Common
& Serious Diseases, 3rd ed, Fitzpatrick et al, McGraw Hill, NY,
1997, pg 502
- Medical Knowledge Self Assessment Program (MKSAP) 17, 18.
American College of Physicians, Philadelphia 2015, 2018
- Sattur AP, Goyal M
Images in clinical medicine. Koilonychia
N Engl J Med. 2010 Apr 29;362(17):e59
PMID: 20427806
http://www.nejm.org/doi/full/10.1056/NEJMicm0910534
- Ghaffari S, Pourafkar L
Koilonychia in Iron-Deficiency Anemia.
N Engl J Med 2018; 379:e13. Aug 30, 2018
PMID: 30157401
https://www.nejm.org/doi/full/10.1056/NEJMicm1802104
- Family Practice Notebook: Koilonychia (images)
http://www.fpnotebook.com/derm/Nails/Klnych.htm
- Brady MP
Fingernail and Toenail Abnormalities: Nail the Diagnosis.
Medscape March 17, 2021
https://reference.medscape.com/slideshow/fingernail-abnormalities-6002456