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The red nail--always benign?

R Baran1

  • 1Nail Disease Center, Cannes, France. baran.r@club-internet.fr

Actas Dermo-Sifiliograficas
|January 26, 2010
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This summary is machine-generated.

Red nail presentations, including red lunulae and longitudinal erythronychia, can indicate various nail diseases. Careful examination helps differentiate conditions like Bowen

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Area of Science:

  • Dermatology
  • Oncology
  • Pathology

Background:

  • Red nail presentations are common but require thorough examination for accurate diagnosis.
  • Longitudinal erythronychia can be monodactylous or polydactylous, with distinct diagnostic implications.
  • Differential diagnosis of red nail conditions is crucial for identifying underlying diseases.

Purpose of the Study:

  • To provide a comprehensive overview of red nail presentations.
  • To discuss the diagnostic significance of red lunulae and longitudinal erythronychia.
  • To differentiate various dermatoses and tumors presenting with red nails.

Main Methods:

  • Review of clinical presentations of red nail disorders.
  • Histopathological correlation for specific conditions.
  • Differential diagnosis based on clinical and pathological findings.

Main Results:

  • Monodactylous longitudinal erythronychia may indicate Bowen's disease or amelanotic melanoma.
  • Polydactylous longitudinal erythronychia involves controversial nosologic positions, including acantholytic and dyskeratotic nevus versus Darier's disease.
  • Other conditions to rule out include acantholytic epidermolysis bullosa, acrokeratosis of Hopf, subungual warty dyskeratoma, lichen planus, psoriasis, melanoma, tumors, and nail involvement in amyloidosis.

Conclusions:

  • Red nails, characterized by red lunulae or longitudinal erythronychia, necessitate careful evaluation.
  • Distinguishing between monodactylous and polydactylous presentations is key for diagnosis.
  • A broad range of dermatological and systemic conditions must be considered in the differential diagnosis of red nails.