TLDR Mechanical trauma like towel drying can cause knotted hair even in straight hair.
The document described a case of trichonodosis (knotted hair) in a 35-year-old Brazilian man with straight hair, which was unusual since the condition typically occurred in individuals with curly or kinky hair. The patient had thick, straight hair with bitemporal recession and vertex thinning, and reported "white things" in his hair. Examination revealed tufts of fibers entrapped in the knots, likely caused by vigorous towel drying. This case suggested that mechanical trauma, such as towel drying, could induce trichonodosis even in straight hair, challenging the notion that curly hair is a prerequisite for the condition. The study emphasized the importance of clinical examination and light microscopy for diagnosing hair shaft abnormalities.
126 citations,
January 1987 in “Journal of The American Academy of Dermatology” The document concludes that understanding hair structure is key to diagnosing hair abnormalities and recommends gentle hair care for management.
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126 citations,
January 1987 in “Journal of The American Academy of Dermatology” The document concludes that understanding hair structure is key to diagnosing hair abnormalities and recommends gentle hair care for management.
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33 citations,
March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
2 citations,
January 2000 in “Elsevier eBooks” The document explains how hair is studied in forensics to identify its source and its role in criminal investigations.
11 citations,
March 2001 in “Clinics in Dermatology” Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
24 citations,
January 2011 in “International Journal of Trichology” Light microscopy is useful for diagnosing different hair disorders.
