Prolonged urticaria with purpura: the spectrum of clinical and histopathologic features in a prospective series of 22 patients exhibiting the clinical features of urticarial vasculitis.

Background: Biopsy specimens of lesions with clinical features of urticarial vasculitis often show a predominantly lymphocytic infiltrate with eosinophils and red blood cell extravasation. Only occasionally is a leukocytoclastic vasculitis encountered, confirming a diagnosis of urticarial vasculitis.

Objective: The aim of this study was to assess the clinical presentation and histologic features of patients who meet the clinical criteria for urticarial vasculitis.

Palmar-plantar keratoderma of Unna Thost associated with atopic dermatitis: an underrecognized entity?

We report six cases of palmar-plantar keratoderma of Unna Thost (PPKUT) associated with atopic dermatitis. All had typical features of PPKUT with diffuse, yellowish thickening on the palms and soles with a well-defined erythematous rim of demarcation on the sides associated with palmar-plantar hyperhidrosis. The changes were obvious since birth or arose during early life, and were persistent.