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Platonychia is an abnormally flat nail.[1]

It may be seen as part of an autosomal-dominant condition in which multiple nail abnormalities are present in many members of a large family. Seen in iron deficiency condition.[2]


  1. "Platonychia (Concept Id: C1853986) - MedGen - NCBI". Archived from the original on 2021-05-04. Retrieved 2022-04-26.
  2. James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology, p. 786. (10th ed.). Saunders. ISBN 0-7216-2921-0.