Systemic lupus erythematosus in the first decade of life.

To evaluate whether the onset of systemic lupus erythematosus in the first decade of life was associated with a unique pattern of racial preponderance, sexual preponderance, genetic predisposition, or disease expression, the medical records of 23 children with systemic lupus erythematosus prior to their tenth birthdays were compared with the medical records of 82 children in whom lupus was diagnosed between their tenth and 20th birthdays. No statistically significant differences in sex distribution, racial (ethnic) background, family history, mode of onset, morbidity, or mortality rates were found between the two age groups. The frequently held view that children with early-onset lupus do worse probably relates to the fact that even though they survive as long as children with the older-onset disease, they die younger because they have the onset of their lupus at a younger age.