Pili bifurcati
Pili bifurcati | |
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Specialty | Dermatology |
Pili bifurcati is characterized by bifurcation found in short segments along the shafts of several hairs, with each branch of the bifurcation being covered with its own cuticle.[1]: 768 [2]
Signs and symptoms
Pili bifurcati is defined by uneven bifurcation of the hair shaft.[3] Every bifurcation forms two distinct parallel branches that eventually unite to form a single shaft. Each branch of the subsequent bifurcations is entirely encased in its own cuticle.[4]
Causes
The etiology of pili bifurcati is a temporary duplication of the papilla tip that occurs during the anagen phase. This temporary production results in two full shafts that emerge from a single pilary canal within the same follicular matrix.[5]
Diagnosis
Hair shaft analysis and trichogram are used to make the diagnosis. Reduced hair shaft caliber and a high percentage of dystrophic anagen hairs may be seen in the first. Patients with protein deficits can have
See also
- List of cutaneous conditions
- Pili multigemini – multiple hairs growing from the same source.
- Ringed hair
References
- ISBN 0-7216-2921-0.
- ISBN 978-1-4160-2999-1.
- ^ PMID 19419464.
- PMID 10882940.
- ^ "Orphanet: Pili bifurcati". Orphanet. 2024-02-29. Retrieved 2024-03-23.
Further reading
- Ruiz-Villaverde, R; Villanova-Mateu, A; Ortega del Olmo, R; Sanchez-Cano, D (2006-07-19). "Pseudomonilethrix type II and pili bifurcati". Journal of the European Academy of Dermatology and Venereology. 20 (7). Wiley: 889–890. ISSN 0926-9959.
- Weary, Peyton E. (1973-09-01). "Pili Bifurcati: A New Anomaly of Hair Growth". Archives of Dermatology. 108 (3): 403. ISSN 0003-987X.