Systemic sclerosis (SSc) is an acquired, sporadic, autoimmune, connective tissue disease with two subsets: limited cutaneous scleroderma (lcSSc) and diffuse cutaneous scleroderma (dcSSc). In the U.S., the annual incidence is about 20 cases per 1 million adults, with a prevalence of about 240 cases per 1 million adults.1 As with other connective tissue disorders, SSc…
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