Hair Shafts in Trichoscopy

October 2013 in “ Dermatologic Clinics ”

Lidia Rudnicka, Adriana Rakowska, Marta Kurzeja, Małgorzata Olszewska

trichoscopy hair shaft exclamation mark hairs tapered hairs trichorrhexis nodosa alopecia areata tinea capitis trichotillomania hair loss hair shaft abnormalities hair loss conditions

Studysummary Trichoscopy is a useful non-invasive method for diagnosing different hair loss conditions. Our plain-language summary of this paper — not a Tressless recommendation.

The 2013 document highlights the utility of trichoscopy in diagnosing hair and scalp diseases by examining hair shaft structure and size. It details the identification of various hair shaft abnormalities, such as exclamation mark hairs, tapered hairs, and trichorrhexis nodosa, and their clinical significance in conditions like alopecia areata, tinea capitis, and trichotillomania. Trichoscopy is also useful for monitoring treatment efficacy and differentiating between hair loss conditions. The document notes that while some abnormalities are condition-specific, others may result from external factors like hair styling. It concludes that trichoscopy is a valuable non-invasive tool for providing diagnostic clues in different types of hair loss.

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research Light Microscopy of the Hair: A Simple Tool to Untangle Hair Disorders

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research Coudability Hairs: A Revisited Sign of Alopecia Areata Assessed by Trichoscopy

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research Comma Hairs: A Dermatoscopic Marker for Tinea Capitis

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research Trichoscopy

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research Trichorrhexis Nodosa: Study on Hair Involvement and Trauma

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