Abstract
Background
Stiff skin syndrome (SSS) is a rare disease characterized by sclerosis of the skin. Cases of both widespread and segmental SSS have been reported.
Objectives
To report the clinical and histopathological characteristics of a large series of SSS.
Materials & Methods
We retrospectively analysed the clinical and histopathological characteristics of widespread and segmental SSS collected from a dermatology department. We also compared histopathology between segmental SSS and morphea.
Results
Thirty-one cases, including three widespread SSS and 28 segmental SSS, were collected. Skin lesions of widespread SSS generally showed skin sclerosis concentrating over the lumbar, buttocks, thighs, proximal part of limbs, and shoulders with specific abnormal gait and posture. Skin lesions of segmental SSS generally showed sclerotic plaques involving the thigh, lumbar area and buttocks, associated with hypertrichosis, hyperpigmentation and a cobblestone appearance. Segmental SSS did not typically cause joint limitation or serious physical discomfort. Histopathologically, SSS showed proliferation of fibroblasts and sclerosis of collagen in the dermis or subcutaneous tissue. Compared with morphea, SSS showed more prominent proliferation of fibroblasts and completely lacked lymphocyte infiltration.
Conclusion
Segmental SSS represents the major variant of SSS. Histopathologically, SSS shows proliferation of fibroblasts, sclerosis and an absence of inflammation.
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We would like to thank the patients and their families for participating in the research.
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IRB status: approved.
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Wen, X., Chen, F. & Wang, L. Stiff skin syndrome: a clinicopathological study of 31 cases. Eur J Dermatol 33, 235–240 (2023). https://doi.org/10.1684/ejd.2023.4477
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DOI: https://doi.org/10.1684/ejd.2023.4477