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Updated: Feb 16, 2026
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Wooly hair nevus
Karen de Almeida Pinto Fernandes1, Karina de Almeida Pinto Fernandes2, Thiago Jeunon de Sousa Vargas3
1Department of Dermatology at Hospital Universitário Gaffrée e Guinle of the Universidade Federal do Estado do Rio de Janeiro (HUGG-UNIRIO) - Rio de Janeiro (RJ), Brazil.
Anais Brasileiros De Dermatologia
|December 22, 2017
Summary
Woolly hair nevus is a rare scalp condition causing coiled, hypopigmented hair. This case highlights its association with dental diastema and verrucous epidermal nevus in a young child.
Area of Science:
- Dermatology
- Genetics
- Pediatrics
Background:
- Woolly hair nevus is a rare structural hair anomaly affecting localized scalp areas.
- It presents as coiled, hypopigmented hair, distinct from hereditary woolly hair syndrome.
Observation:
- A case of woolly hair nevus is presented in a 2-year-old child.
- The condition was associated with dental diastema and verrucous epidermal nevus.
Findings:
- The patient exhibited localized hair abnormalities consistent with woolly hair nevus.
- Co-occurrence of dental diastema and verrucous epidermal nevus was noted.
Implications:
- This case expands the understanding of woolly hair nevus presentations.
- It suggests potential syndromic associations requiring further investigation in pediatric dermatology.
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