Videodermoscopy as a Diagnostic Tool for Pili Trianguli andCanaliculi Syndrome.

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Pili trianguli et canaliculi syndrome is a rare hair shaft disorder characterized by frizzy hair that cannot be smoothed flat. Affected hair shafts are triangular or kidney-shaped with longitudinal grooving. Diagnosis typically requires electron microscopy, which may be cost-prohibitive, or alternatively, the distinctive features of hair shafts can be identified through histological examination of cross sections, that is time-consuming. To overcome these challenges, we describe a novel videodermoscopy technique as a cost-effective and simple alternative, suitable for outpatient settings.