Hair wreath sign

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

hair collar sign

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HistoryThis section has been translated automatically.

Commens, 1989

DefinitionThis section has been translated automatically.

Annular hypertrichosis characterized by longer and thicker hair around a congenital localized alopecia on the capillitium. The hair crown sign is considered a possible leading symptom for ectopic nerve tissue, which has been relocated peripherally as a result of dysraphism (disturbance of the neural tube closure). Depending on whether only parts of the meninges or additionally parts of brain tissue prolapse, this finding is called meningocele or meningoencephalocele.

DiagnosisThis section has been translated automatically.

Cranial imaging

Differential diagnosisThis section has been translated automatically.

aplasia cutis

Operative therapieThis section has been translated automatically.

After the diagnosis has been made, a neurosurgeon must determine the possible operative indication.

LiteratureThis section has been translated automatically.

  1. Commens C et al (1989) Heterotopic brain tissue presenting as soon cysts with a collar of hypertrophic hair: the "hair collar" sign. Arch Dermatol 125: 1253-1256
  2. Held I et al. (2011) The hairline sign - possible indication of cranial dysraphism. JDDG 9: 136-139

Authors

Last updated on: 29.10.2020

Author: Prof. Dr. med. Peter Altmeyer