Marginal vitiligo: an unusual depigmenting disorder
Abstract
Background: Marginal vitiligo, or inflammatory vitiligo with raised borders is a unique subset of vitiligo vulgaris presenting with scattered depigmented, pruritic patches surrounded by a raised, erythematous border. Alternative diagnoses include discoid lupus erythematosus and cutaneous T-cell lymphoma.
Purpose: To properly guide treatment, it is important to exclude other conditions that present with a similar pattern of depigmentation. This requires the ability to identify specific cutaneous and histologic clues that support this diagnosis.
Material and Methods: A 22 year-old man presented with a history of depigmented, pruritic patches and surrounding raised, erythematous borders. Several areas of depigmentation on the scalp were associated with alopecia. Punch biopsy of the rim of a patch was performed and sent for routine hematoxylin and eosin staining and direct immunofluorescence.
Results and Conclusion: Histopathology revealed a spongiotic dermatitis with superficial dermal lymphocytic infiltrate and eosinophils; DIF demonstrated no immunoreactants. A diagnosis of inflammatory vitiligo with raised borders was thus made based on consistent clinical and histopathologic features. The symptoms improved with topical clobetasol 0.05% cream twice daily.