TLDR Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.
The document reports a case of a 25-year-old man with Pili Annulati (PA), a hair condition characterized by alternating light and dark bands on the hair shaft, who presented with multiple fragile hairs and a history of heavy hairdryer use. Physical and dermoscopic examination revealed black hair shafts with alternating light brown color and multiple small white-gray spots. Microscopic examination showed air-filled spaces within the hair shaft, and scanning electron microscopy revealed loss of cuticle, indentations, longitudinal fissuring, and exposure of the cortex microfibers, resembling trichorrhexis nodosa. The study suggests that the air-filled spaces in PA may contribute to hair fragility and susceptibility to environmental trauma, such as damage from frequent hairdryer use. The authors conclude that the patient's heavy use of a hairdryer could have exacerbated the underlying PA, leading to increased hair fragility.
13 citations,
January 2012 in “International journal of trichology” The study found that hair fragility in Pili annulati may be caused by cavities and damage within the hair shafts.
49 citations,
September 2004 in “Journal of the European Academy of Dermatology and Venereology” Careful light microscopy is crucial for detecting mild cases of pili annulati, which weakens hair and varies widely in expression.
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August 2012 in “Journal of the American Academy of Dermatology” Dermatoscopy is a useful tool for diagnosing hair disorders and can help choose samples for more detailed analysis.
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June 2008 in “Journal of The American Academy of Dermatology” The article explains the genetic causes and symptoms of various hair disorders and highlights the need for more research to find treatments.
November 2019 in “Harper's Textbook of Pediatric Dermatology” Understanding normal hair growth and loss in children is key to diagnosing and treating hair disorders.
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October 2007 in “Expert Review of Dermatology” Hair ages due to various factors and treatments like minoxidil and finasteride can help, but more research and better public awareness are needed.
99 citations,
June 2005 in “Journal of Cosmetic Dermatology” Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.
