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Article
September 1986

Pili Trianguli et Canaliculi: A Nonfamilial Case With Eyebrow and Eyelash Involvement

Author Affiliations

Dermatology Division; Faculty of Medicine, Ramathibodi Hospital Mahidol University Bangkok, Thailand

Arch Dermatol. 1986;122(9):977-978. doi:10.1001/archderm.1986.01660210025011
Abstract

To the Editor.—  In 1973 Stroud and Mehregan described a patient with abnormally crimped hair, with triangular or kidney-shaped cross section, that tended to stick out. They termed this condition spun glass hair. In the same year, Dupre et al2 described a similar abnormality of the hair which they called uncombable hair syndrome or pili trianguli et canaliculi, based on its ultrastructural finding.2,3 There were several other reports describing this condition in the same family, suggesting an autosomal dominant mode of inheritance.4,5 All previous such patients were reported to have normal eyebrows and eyelashes, or no mention was made about them. We describe a nonfamilial case of pili trianguli et canaliculi or, uncombable hair with involvement of both eyebrows and eyelashes.

Report of a Case.—  A 5-year-old girl, the only daughter of unrelated, healthy parents, was born normal after an uneventful pregnancy. Her growth and development were

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