Durometer to Objectively Measure the Hardness of Skin in Linear Morphea.

A 7-year-old female child presented with a linear depressed lesion involving the forehead and frontoparietal region of the scalp and was diagnosed as en coup de sabre. Following treatment with soap Psoralen combined with ultraviolet A (UVA) therapy and topical corticosteroid and calcipotriol combination, there was significant resolution of the induration, and in addition, there was partial regrowth of the hair. The resolution of the induration could be objectively documented using a durometer. We used shore durometers, which are simple, handheld measuring devices with a wider range of durometer scores that use specific, standardized techniques to measure the hardness. Durometers provide an accurate, scalable measurement with an ease of detecting change. Variation in the durometer readings corresponds to the change in disease activity.