In the United States, approximately one person in 1,000 is affected. Children rarely suffer the systemic type, but localized scleroderma is common. Most adults are diagnosed after their 30th birthday and before age 50. The disease has high rates among the native American Choctaw tribe and African-American females.
Patients may or may not experience systemic organ involvement. Atypical scleroderma may show any variation of these changes without skin changes or with finger swelling only. Subcommittee for Scleroderma Criteria of the American Rheumatism Association Diagnostic and Therapeutic Criteria Committee. Preliminary criteria for the classification of systemic sclerosis (scleroderma). Arthritis Rheum. 1980; 23:581-90.
Oribasius (325403 A.D.) and Paulus Agineta (625690 A.D.), also wrote on the subject. It is difficult for us to know if these were truly examples of scleroderma because the descriptions were inexact.
Source: Wikipedia > Scleroderma
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