Localized scleroderma in childhood: a report of 30 cases.

Localized scleroderma (LS), a rare disease that occurs primarily in the pediatric age group, differs from systemic sclerosis (SSc) in that it is usually limited to the skin and subcutaneous tissue and is only rarely associated with systemic manifestations. The authors' experience with pediatric LS seen in 30 patients at a tertiary care center was reviewed: 26 had linear scleroderma, 19 on an extremity and 7 on the face; 3 had morphea; and 1 had generalized morphea. Antinuclear antibodies were present in 76% and rheumatoid factor in 39%. Five of 19 patients with linear scleroderma that involved an extremity had growth failure in that limb, and 1 required surgery. Sclerodermatous involvement over a joint resulted in limited range of movement in 6 patients, and 1 required surgery. One of the 30 patients developed SSc and polymyositis. There was difficulty in evaluating disease activity and hence in evaluating treatment. This experience with a large patient population suggests that LS, although usually a self-limiting disease, can result in significant morbidity.