Ann Dermatol.  2017 Apr;29(2):254-256. 10.5021/ad.2017.29.2.254.

Pili Annulati with Multiple Fragile Hairs

• Nam CH
• Park M
• Choi MS
• Hong SP
• Kim MH
• Park BC

• KMID: 2394861
• DOI: http://doi.org/10.5021/ad.2017.29.2.254

Abstract

No abstract available.

MeSH Terms

Hair*

Figure

• 

  Fig. 1 (A) Regular alternating bright bands on hair shafts. (B) Multiple white-gray spots appearing like grains of sand exist on the hair shaft. (C) Alternating dark and bright bands with intermittent whit spots on the hair shaft appeared on the dermoscopic examination. (D) The air-filled dark spaces occupied 40%~80% of the hair shaft on inverted microscopy.

• 

  Fig. 2 (A) Loss of cuticle and mild indentation on the surface of mildly damaged hair. (B) Longitudinal cracks are visible in the hair shaft, which exposed the microfibers of the hair cortex. (C) Swollen node resembles two broomsticks pushed into each other and formed a so-called thrust paint brush. (D) Mechanical trauma on the swollen node fractured the hair ends, as shown by the frayed macrofibers.

Reference

1. Giehl KA, Dean D, Dawber RP, Leigh I, de Berker DA, Wojnarowska F. Cytokeratin expression in pili annulati hair follicles. Clin Exp Dermatol. 2005; 30:426–428.

2. Giehl KA, Ferguson DJ, Dawber RP, Pittelkow MR, Foehles J, de Berker DA. Update on detection, morphology and fragility in pili annulati in three kindreds. J Eur Acad Dermatol Venereol. 2004; 18:654–658.

3. Akoglu G, Emre S, Metin A, Erbil KM, Akpolat D, Firat A, et al. Pili annulati with fragility: electron microscopic findings of a case. Int J Trichology. 2012; 4:89–92.

4. Feldmann KA, Dawber RP, Pittelkow MR, Ferguson DJ. Newly described weathering pattern in pili annulati hair shafts: a scanning electron microscopic study. J Am Acad Dermatol. 2001; 45:625–627.

5. Werner K, St-Surin-Lord S, Sperling LC. Pili annulati associated with hair fragility: cause or coincidence? Cutis. 2013; 91:36–38.