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Dermis
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Uncommon Non-Infectious Annular Dermatoses.

Martina Maurelli1, Chiara Colato2, Paolo Gisondi1

  • 1Department of Medicine, Section of Dermatology and Venereology, University of Verona, Verona, Italy.

Indian Journal of Dermatology
|November 17, 2022
PubMed
Summary

Distinguishing annular skin lesions can be challenging. This review clarifies common and uncommon causes, including infectious and non-infectious types like erythema annulare centrifugum, aiding diagnosis.

Keywords:
Annular lichenoid dermatitis of youth and annular erythema in Sjögren syndromeeosinophilic annular erythemaerythema annulare centrifugumneutrophilic figurate erythemapalpable migratory arciform erythema

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Area of Science:

  • Dermatology
  • Immunology

Background:

  • Annular lesions on the skin present diagnostic challenges due to overlapping clinical features.
  • Classification includes infectious/non-infectious and common/uncommon categories.

Purpose of the Study:

  • To review and differentiate various annular dermatoses.
  • To discuss the nosographic attribution and etiopathogenesis of debated entities.

Main Methods:

  • Literature review of established and debated annular dermatoses.
  • Analysis of clinical presentations and potential etiopathogenic mechanisms.

Main Results:

  • Common non-infectious causes include granuloma annulare, urticaria, and subacute lupus erythematosus.
  • Rare entities like erythema annulare centrifugum (EAC) and those associated with Sjögren syndrome are discussed.
  • Debated conditions include neutrophilic/eosinophilic figurate erythema and annular lichenoid dermatitis of youth.

Conclusions:

  • Distinguishing annular dermatoses requires careful evaluation beyond physical appearance.
  • Immune-mediated mechanisms are likely involved in many debated entities.
  • Further research is needed to clarify the nosographic positioning and clinicopathological identity of rare annular dermatoses.