Linear cutaneous lupus erythematosus following the lines of Blaschko - Case report

Linear cutaneous lupus erythematosus in children-report of two cases and review of the literature: A case report

Linear cutaneous lupus erythematosus is an unusual presentation of cutaneous lupus following Blaschko’s lines. It is described mostly in children and young adults and is usually not associated with systemic involvement. We report two cases of linear cutaneous lupus erythematosus in children who significantly improved after treatment with hydroxychloroquine in combination with topical corticosteroids and tacrolimus. These rare cases underline the importance of including linear cutaneous lupus erythematosus in the differential diagnosis of blaschkoid inflammatory lesions.

Adult-onset linear discoid lupus erythematosus on the forehead mimicking en coup de sabre: a case report

Background

Linear cutaneous lupus erythematosus (LE) is an unusual form of LE-specific cutaneous condition, occurring in children and young adults. Due to its rarity, the diagnosis of linear cutaneous LE can be difficult and facial lesions can resemble linear morphea or en coup de sabre. Differential diagnosis of similar conditions along the lines of Blaschko must be differentiated from linear LE.

Case presentation

We report a case of linear discoid LE on the forehead of an adult female Thai patient mimicking en coup de sabre. The dermatoscopy, histopathology and direct immunofluorescence findings were consistent with chronic cutaneous LE.

Conclusions

As this patient demonstrated classic dermatoscopic features of LE, we emphasized that the diagnosis of linear cutaneous LE can be made by dermatoscopy. This is particularly beneficial for young self-conscious patients with facial lesions that are reluctant to perform skin biopsy.