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Pili bifurcati is an uncommon transitory hair shaft dysplasia characterized by segmental duplication of the hair shaft: a ramification generates two parallel branches which fuse to form a single shaft again. Each branch is covered by its own cuticle.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for pili bifurcati.
2 publications have been identified in PubMed for pili bifurcati. Research spans Case Report / Case Series (100%).
Holm SØ (2025). [PMID: 40433810](https://pubmed.ncbi.nlm.nih.gov/40433810/). *Pediatric dermatology*. [Case Report / Case Series]
Davidson E (2025). [PMID: 39168482](https://pubmed.ncbi.nlm.nih.gov/39168482/). *Pediatric dermatology*. [Case Report / Case Series]
Data assembled from 3 of 12 sources · Last updated Sep 18, 2026, 11:48 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center