[Shulman's syndrome.  Diffuse fasciitis with eosinophilia.  A differential diagnosis from polymyositis (author's transl)]. 
A case of diffuse fasciitis with eosinophilia is reported.  The clinical pattern of this disease has some resemblance with polymyositis.  In 1974, Shulman described this syndrome as a new entity.  The differential diagnosis of those inflammatory and sclerodermatous changes in the perimuscular fascia is considered.  An histological, immunological and electrophysiological investigation has been performed.  We propose an auto-immunological mechanism in the etiopathogenesis of this syndrome.