Dermatitis repens (also known as "Acrodermatitis continua," "Acrodermatitis perstans," "Pustular acrodermatitis," "Acrodermatitis continua of Hallopeau," "Acrodermatitis continua suppurativa Hallopeau," "Hallopeau's acrodermatitis,", "Hallopeau's acrodermatitis continua," and "Dermatitis repens Crocker") is a rare, sterile, pustular eruption of the fingers and toes that slowly extends proximally.