49 citations
,
September 2004 in “Journal of the European Academy of Dermatology and Venereology” This study found that careful light microscopy using fluid-mounted hair improves detection of the pili annulati phenotype, which varies widely in expression and affects hair fragility.
4 citations
,
January 2017 in “Annals of Dermatology” Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.
9 citations
,
January 2001 in “Dermatology” This study reports two cases where pili anulati, typically a non-fragile hair condition, showed increased fragility due to androgenetic alopecia, causing hair shaft fracturing in the affected area.
36 citations
,
July 1988 in “Archives of Dermatological Research” Pili annulati is caused by a protein metabolism disorder affecting hair structure.
7 citations
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May 1988 in “International Journal of Dermatology” This case report describes an 18-year-old man with pili annulati, characterized by a "shagreened" appearance of the hair shaft with alternate bright and dark bands and wide holes throughout the cortex.