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Unilateral subungual hyperkeratosis following a cerebrovascular incident in a patient with psoriasis

The prevalence of nail abnormalities in psoriasis is reported to be between 50 and 90% of affected adults.1 These include pitting, nail discoloration, onycholysis and subungual hyperkeratosis. Although nail changes may be associated with neurological disease, there are no previous reports of psoriatic nail changes following cerebrovascular events. We report the first case to our knowledge of unilateral subungual hyperkeratosis in a psoriatic patient which developed following a cerebrovascular event.