Acrodermatitis continua of Hallopeau: treatment with etretinate and review of relapsing pustular eruptions of the hands and feet.

Acrodermatitis continua of Hallopeau is considered by many to be a variant of pustular psoriasis because of similar histologic features. Its clinical picture is unique and helps to distinguish acrodermatitis from pustular psoriasis. We present a patient with acrodermatitis continua of Hallopeau resistant to conventional therapy. We describe the beneficial effect of etretinate in this patient.