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Updated: Aug 20, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
Lupus-like phototriggering in a young woman with benign summer light eruption
M-C Marguery1, L Lamant, P Bayle
1Department of Dermatology, Purpan Hospital, TSA 40031, 31059 Toulouse cedex 9, France. marguery@mc.chu-toulous.fr
Abstract:
We report the case of a young woman with a single history of benign summer light eruption (BSLE) who developed delayed onset annular lupus-like lesions triggered by a polychromatic phototest, 6 weeks after the irradiation. BSLE of French authors is an idiopathic photodermatosis that corresponds to the minor form of polymorphic light eruption (PLE) of Anglo-Saxon authors. This patient may develop a true lupus erythematosus in the future as indicated by this lupus-like phototriggering and in view of the high prevalence of PLE in lupus patients.
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