Blaschkoid lichen planus occurring in childhood systemic lupus erythematosus.

Lupus erythematosus-lichen planus (LE-LP) overlap syndrome represents a rare disorder with clinical and histopathological features of both lichen planus and lupus erythematosus presenting in the same lesions. However, lichen planus and lupus erythematosus can also coexist in the same patient. Blaschkoid lichen planus in the setting of concurrent childhood-onset systemic lupus erythematosus has not been previously described.