Halo scalp ring is an uncommonly reported alopecia of the scalp that arises perinatally.
To describe 5 new cases of halo scalp ring, and to review the literature.
An outpatient dermatology clinic in an urban area; patients diagnosed in a 2-year period were included in the study.
Halo scalp ring is most commonly a temporary, nonscarring alopecia that occurs in patients born to primigravidas.
Halo scalp ring is a distinctive form of alopecia attributed to caput succedaneum. It is underreported and generally has a good prognosis. However, scarring may occur.