“…In addition, some investigators have found high levels of pro-inflammatory markers such as interleukin-6, transforming growth factor-2 and tumor necrosis factor-alpha, suggesting an inflammatory pathogenesis. 7,11,13,14 Symptoms of stiff skin syndrome include a rock-hard deep skin hardening that is inherently connected to the underlying tissue, reduced joint mobility, and hypertrichosis. The buttocks, thigh and shoulder are the most affected body regions, but ocular involvement has been reported in rare cases.…”