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Cutis rhomboidalis nuchae
Other Resources UpToDate PubMed

Cutis rhomboidalis nuchae

Contributors: Mack Su, Stephen Huang MD, Whitney A. High MD, JD, MEng, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Cutis rhomboidalis nuchae (CRN) is a common clinical variant of solar elastosis in which the skin of the posterior neck becomes thickened, leathery, and deeply furrowed in a geometric pattern. The condition is a marker of chronic sun damage with the subsequent development of disorganized and damaged collagen and elastic tissue.

CRN primarily affects elderly men and women with lighter skin phototypes and history of significant sun exposure. Outdoor occupations also predispose patients to CRN.

CRN is a chronic condition, and once the skin changes have occurred, it is difficult, if not impossible, to reverse the appearance of the skin.

Codes

ICD10CM:
L57.2 – Cutis rhomboidalis nuchae

SNOMEDCT:
89019003 – Cutis rhomboidalis nuchae

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Lichen simplex chronicus – Lines not as furrowed, and history of intense pruritus and rubbing is elicited.
  • AL amyloidosis – More intense erythema, possible enlargement of the tongue, and biopsy demonstrates amyloid deposition.
  • Favre-Racouchot syndrome – Acneiform lesions and agminated comedones.
  • Psoriasis – Pink to red, erythematous, well-demarcated plaques with a silvery and micaceous scale; tends to involve the occipital scalp, which is relatively protected from the sun and not involved in CRN.
  • Chronic actinic dermatitis
  • Fibroelastolytic papulosis
  • Pseudoxanthoma elasticum

Best Tests

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Management Pearls

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Therapy

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References

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Last Reviewed:10/20/2020
Last Updated:10/20/2020
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Patient Information for Cutis rhomboidalis nuchae
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Cutis rhomboidalis nuchae
A medical illustration showing key findings of Cutis rhomboidalis nuchae : Posterior neck, Thickened skin
Clinical image of Cutis rhomboidalis nuchae - imageId=570677. Click to open in gallery.  caption: 'A thickened and leathery quality to the skin of the posterior neck, with an intersecting pattern of accentuated skin lines forming multiple quadrangular or rhomboidal shapes.'
A thickened and leathery quality to the skin of the posterior neck, with an intersecting pattern of accentuated skin lines forming multiple quadrangular or rhomboidal shapes.
Copyright © 2024 VisualDx®. All rights reserved.