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Halo scalp ring - Hair and Scalp
Other Resources UpToDate PubMed

Halo scalp ring - Hair and Scalp

Contributors: Craig N. Burkhart MD, Dean Morrell MD, Lowell A. Goldsmith MD, MPH
Other Resources UpToDate PubMed

Synopsis

Halo scalp ring is a ring or band of alopecia that is several centimeters in width encircling or more commonly partially encircling the head; it may extend along the posterior occipital area, around the temporal portion of the scalp above the ears or onto the forehead. It is associated with caput succedaneum of the scalp in neonates and believed to be secondary to direct pressure (sometimes with underlying necrosis) on the vertex from the cervix during labor. Generally the hair grows back over 6 months without scarring, but there are reported cases of scarring alopecia.

Codes

ICD10CM:
L65.9 – Nonscarring hair loss, unspecified

SNOMEDCT:
205592008 – Congenital localized alopecia

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

To perform a comparison, select diagnoses from the classic differential

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Best Tests

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Management Pearls

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Therapy

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References

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Last Updated:06/28/2010
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Halo scalp ring - Hair and Scalp
A medical illustration showing key findings of Halo scalp ring : Vertex scalp, Round areas of non-scarring alopecia
Clinical image of Halo scalp ring - imageId=1417919. Click to open in gallery.  caption: 'An arcuate broad band of alopecia on the posterior and lateral scalp.'
An arcuate broad band of alopecia on the posterior and lateral scalp.
Copyright © 2024 VisualDx®. All rights reserved.