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21 Possible Causes for Koilonychia of Fingernails and Toenails

  • Onychia

    Onychorrhexis also known as brittle nails, is brittleness with breakage of fingernails or toenails.[en.wikipedia.org] Koilonychia is when the nail curves upwards (becomes spoon-shaped) due to an iron deficiency.[en.wikipedia.org]

  • Autosomal Dominant Prognathism

    Nails are generally thin, slow-growing, brittle, and spoon-shaped (koilonychia). Toenails are usually more severely affected than fingernails.[mendelian.co]

  • Congenital Non-Neoplastic Nevus

    , malformation of nail, not otherwise specified Q84.6 Duplication of thumbnail Q84.6 Hyperconvex fingernails Q84.6 Hyperconvex toenails Q84.6 Hypoplastic fingernails Q84.6[cdc.gov] Q84.2 Congenital hypertrichosis Q84.20 Absent nails (major if third phalanx is missing) Q84.3 Enlarged or hypertrophic nails Q84.5 Pachyonychia Q84.5 Congenital clubnail, koilonychia[cdc.gov]

  • Bloch Sulzberger Syndrome

    The fingernails are more commonly affected than toenails.[ijpd.in] The various reported changes include koilonychia, yellow discoloration, brittle nails, onycholysis, periungual, and subungual tumors.[ijpd.in]

  • Dystrophic Nail

    In both forms, fingernails are affected more often than toenails and koilonychia is common.[karger.com] Onychorrhexis also known as brittle nails, is brittleness with breakage of fingernails or toenails.[en.wikipedia.org] Koilonychia is when the nail curves upwards (becomes spoon-shaped) due to an iron deficiency.[en.wikipedia.org]

  • Congenital Clubbing

    The visual appearance of the fingernails and toenails may suggest an underlying systemic disease.[aafp.org] Careful examination of the fingernails and toenails can provide clues to underlying systemic diseases ( Table 1 ).[aafp.org] Koilonychia, or “spoon-shaped” nails, may stimulate a work-up for hemochromatosis or anemia.[aafp.org]

  • Gorlin-Chaudhry-Moss Syndrome

    Another feature is nail dysplasia: in this syndrome, nails tend to be spoon-shaped (koilonychia), thin, slow growing, and brittle (onychorrhexis) and toenails are generally[vivavoceoralmedicineradiology.com] […] affected more rigorously than fingernails.[vivavoceoralmedicineradiology.com]

  • Hypodontia

    This report describes familial hypodontia, fingernail onychorrhexis, and toenail koilonychia consistent with Witkop's syndrome.[ncbi.nlm.nih.gov] The nails are thin, slow-growing, brittle and spoon-shaped (koilonychia). Toenails are usually more severely affected than the fingernails.[medicinenet.com] Zabawski EJ, Cohen JB (1999) Hereditary hypodontia and onychorrhexis of the fingernails and toenail koilonychia: Witkop’s tooth-and nail syndrome.[link.springer.com]

  • Onycholysis

    The visual appearance of the fingernails and toenails may suggest an underlying systemic disease.[aafp.org] Careful examination of the fingernails and toenails can provide clues to underlying systemic diseases ( Table 1 ).[aafp.org] Koilonychia, or “spoon-shaped” nails, may stimulate a work-up for hemochromatosis or anemia.[aafp.org]

  • Cranio-Osteo-Arthropathy

    The visual appearance of the fingernails and toenails may suggest an underlying systemic disease.[pubfacts.com] Koilonychia, or "spoon-shaped" nails, may stimulate a work-up for hemochromatosis or anemia.[pubfacts.com]

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