Title

Posttraumatic onychoheterotopia: A case and review of the pediatric literature.

Document Type

Article

Publication Date

9-2021

Identifier

DOI: 10.1111/pde.14702

Abstract

BACKGROUND: Onychoheterotopia, or ectopic nail, is a rare nail condition in which nail growth occurs in areas other than the distal phalanges. The majority of cases in the literature are noted to be congenital; however, acquired cases have less commonly been described following either acute or chronic trauma.

METHODS: We present a case of acquired onychoheterotopia in a child, with a corresponding literature review of acquired pediatric onychoheterotopia cases for comparison.

RESULTS: There were a total of 10 cases of acquired onychoheterotopia in pediatric patients in the literature. Including our patient, 81.8% (9/11) developed an ectopic nail on the fingers. Crush injury preceded the ectopic nails in 45.5 % (5/11) of cases. Infection occurred in 27.3% (3/11).

CONCLUSIONS: Although the incidence and prevalence of acquired onychoheterotopia are unknown, it seems to be an uncommon phenomenon. From our case and others from the literature, there may be associations with crush injury specifically. Further research will be needed to fully elucidate the pathophysiology and risk factors for ectopic nail growth.

Journal Title

Pediatric dermatology

Volume

38

Issue

5

First Page

1272

Last Page

1275

MeSH Keywords

Child; Fingers; Humans; Nail Diseases; Nails; Nails, Malformed; Rare Diseases

Keywords

infections-bacterial; lumps/bumps; nail disorder

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