Abstract
Discoid lupus erythematosus (DLE) is an inflammatory autoimmune disease leading to scarring and hair loss. Linear Discoid lupus erythematosus has been mentioned in the literature as a rare variant. This article describes isolated linear DLE of the scalp. We present a 26-year-old Saudi male who had unilateral linear DLE of the scalp with no involvement of other body sites and no systemic manifestations. This case is the first case of isolated linear DLE on the scalp. This presentation should be considered as a differential diagnosis of linear scarring alopecia as a distinct morphological pattern of DLE.
Highlights
Discoid Lupus Erythematosus (DLE) is considered the most common form of chronic cutaneous lupus erythematosus
Discoid Lupus Erythematosus is usually localized to the head and neck in 80% of the cases and it usually affects sunexposed areas
The remaining skin, oral mucosa and nails were normal. He never complain of joint pain or photosensitivity and was otherwise healthy Dermoscopy showed areas of Perifollicular whitish halo, follicular keratotic plugs and telangiectasias (Fig. 1B) Antinuclear antibodies were negative
Summary
Discoid Lupus Erythematosus (DLE) is considered the most common form of chronic cutaneous lupus erythematosus. DLE of the scalp typically shows erythematous papules or plaques and keratotic follicular plugging associated with pigmentary changes and atrophy of the skin. It has a female predominance, especially in the fourth and fifth generations [1]. Discoid Lupus Erythematosus is usually localized to the head and neck in 80% of the cases and it usually affects sunexposed areas. If lesions develop beyond the head and neck area it is termed disseminated DLE. Cutaneous involvement of DLE along lines of Blaschko is quite rare [4]. We present a very rare case of Linear DLE of the Scalp in lines of Blaschko
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