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KoilonychieL60.83
Synonym(s)
Eggshell nail; Hollow nail; Koilonychia; spoon nail; Spoon nail
HistoryThis section has been translated automatically.
Heller, 1898
DefinitionThis section has been translated automatically.
Polyätiological, congenital or acquired deformity of the nails with cup-like hollowing of the nail plate detached at the edge. A spoon-like form is formed by this.
Clinical featuresThis section has been translated automatically.
- Usually several, possibly all fingernails, rarely also the toenails, are affected.
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Acquired koilonychia can be encountered in the following conditions:
- Alcohol diseases (see below Alcohol, skin changes)
- Avitaminosis B2 ( Ariboflavinosis)
- Iron deficiency anemia
- Raynaud's syndrome
- Thyroid diseases
- Mechanical or chemical effects
- Hereditary koilonychia are coincidentally encountered in the following syndromes:
TherapyThis section has been translated automatically.
Exclusion of a genetic disease. Otherwise according to the cause, e.g. iron substitutionin iron deficiency anemia. Avoidance of mechanically triggering factors.
LiteratureThis section has been translated automatically.
- Kwon NH et al (2012) Sporadic congenital leukonychia with koilonychia. Int J Dermatol 51:1400-1402
- Mutoh M et al (2015) A syndrome of leukonychia, koilonychia and multiple pilar cysts. Acta Derm Venereol 95:249-250
- Pancar GS et al (2013) Irritant nail dermatitis of chemical depilatory product presenting with koilonychia. Cutan Ocul Toxicol 33:87-89
- Prathap Pet al. (2010) Familial koilonychia. Indian J Dermatol 55:406-407
- Taguchi Y et al (2013) Koilonychia in a patient with subacute iron-deficiency anemia. Internal Med 52: 2379