Abstract
The trichoscopic appearance of trichorrhexis nodosa depends on the magnification and the presence of immersion fluid. At low magnifications, trichoscopy reveals nodular thickenings along hair shafts, and these thickenings appear lighter in the dark hair shafts. At these sites, the hairs bend with a rounded edge and eventually break, leaving a slightly thickened, rounded hair shaft end. At higher magnifications, trichoscopy reveals numerous small fibers, producing a picture that resembles two brooms or brushes aligned in opposition. To better visualize trichorrhexis nodosa, the hairs should be evaluated with dry trichoscopy.
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Rudnicka, L., Olszewska, M., Rakowska, A., Pinheiro, A.M.C. (2012). Trichorrhexis Nodosa. In: Rudnicka, L., Olszewska, M., Rakowska, A. (eds) Atlas of Trichoscopy. Springer, London. https://doi.org/10.1007/978-1-4471-4486-1_10
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DOI: https://doi.org/10.1007/978-1-4471-4486-1_10
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