Loose anagen hair in a child with noonan’s syndrome

A. Tosti, C. Misciali, P. Borrello, P. A. Fanti, F. Bardazzi, A. Patrizi

Research output: Contribution to journalArticle

28 Scopus citations


We report on a 4 1/2 -year-old girl affected by loose anagen hair and Noonan's syndrome. The girl had short, blond, easily pluckable hair that had never been cut. The trichogram showed an absolute prevalence of abnormally shaped anagen bulbs lacking inner and outer root sheaths. A scalp biopsy evidenced a marked cleft formation between fragmented inner root sheaths and irregularly shaped hair shafts.

Original languageEnglish (US)
Pages (from-to)247-249
Number of pages3
Issue number4
StatePublished - Jan 1 1991
Externally publishedYes



  • histopathology
  • loose anagen hair
  • loose anagen syndrome
  • Noonan's syndrome
  • trichogram

ASJC Scopus subject areas

  • Dermatology

Cite this

Tosti, A., Misciali, C., Borrello, P., Fanti, P. A., Bardazzi, F., & Patrizi, A. (1991). Loose anagen hair in a child with noonan’s syndrome. Dermatology, 182(4), 247-249. https://doi.org/10.1159/000247806