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Polarized transilluminating dermoscopy: Bedside trichoscopic diagnosis of trichothiodystrophy
Yul W Yang1, Kevin Yarbrough2, Mario Mitkov3
1Mayo Clinic Arizona, Scottsdale, AZ, USA.
Pediatric Dermatology
|September 26, 2017
Abstract:
Trichothiodystrophy is a rare autosomal recessive disorder resulting in a broad range of systemic abnormalities. Polarizing microscopy of the hair reveals the pathognomic "tiger tail" of alternating light and dark bands, but the need for a microscope prevents rapid bedside diagnosis. We describe a new technique for the bedside diagnosis of trichothiodystrophy using a handheld polarizing dermatoscope, precluding the need for microscopic examination.

