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Updated: Jan 28, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
Dermoscopy of subungual red comets associated with tuberous sclerosis complex
Andrea Sechi1, Francesco Savoia1, Annalisa Patrizi1
1Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.
Abstract:
We report here our experience on the use of dermoscopy for the detection of subungual red comets, which are sometimes present in the nails of patients affected by tuberous sclerosis complex. Dermoscopy allowed us to visualize, with better resolution than the naked eye, very tortuous capillaries surrounded by a whitish halo and close parallel binary tortuous capillaries. In some cases, subungual red comets are associated with the presence of periungual or subungual fibromas, but their exact pathogenesis remains unknown.
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