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Durometer to Objectively Measure the Hardness of Skin in Linear Morphea
Nithya Satish1, Chakravarthi R Srinivas2
1Ranga's Centre of Dermatology, Coimbatore, Tamil Nadu, India.
International Journal of Trichology
|July 14, 2025
Summary
En coup de sabre, a rare condition, showed significant improvement with Psoralen and ultraviolet A (UVA) therapy. Objective durometer measurements confirmed reduced induration and partial hair regrowth, indicating treatment efficacy.
Area of Science:
- Dermatology
- Pediatrics
Background:
- En coup de sabre is a rare form of morphea presenting as a linear depressed lesion.
- It typically affects the forehead and scalp, posing cosmetic and functional challenges.
Observation:
- A 7-year-old female presented with a linear depressed lesion on her forehead and frontoparietal scalp, diagnosed as en coup de sabre.
- The lesion exhibited significant induration.
Findings:
- Treatment with Psoralen combined with ultraviolet A (UVA) therapy, topical corticosteroids, and calcipotriol resulted in significant resolution of induration.
- Partial hair regrowth was observed in the affected area.
- Shore durometers objectively documented the reduction in skin hardness, correlating with disease activity.
Implications:
- This case highlights the efficacy of a combination therapy for en coup de sabre.
- Objective durometer measurements offer a reliable method for assessing treatment response in morphea.
- The findings suggest potential for improved cosmetic and functional outcomes in pediatric patients with en coup de sabre.
