[Striated lupus erythematosus following the Blaschko lines]

We describe a striated cutaneous lupus erythematosus following the lines of Blaschko. These are lines along which cell populations having a common stem cell spread. If this stem cell is genetically altered, the lines of Blaschko are made visible by linear skin diseases. In the case of striated lupus erythematosus described here this genetic alteration remained unnoticed until, due to the influence of possible injury, the affected cells became antigenic, provoking a localized autoimmune disease.