[Polymyositis associated with Gougerot-Sjögren syndrome]

A 42-year-old woman with a sicca syndrome associating xerostomia and xerophthalmia developed proximal motor weakness in all four limbs due to a polymyositis. Regression of the motor deficiency followed the administration of corticoid therapy. Polymyositis occurring during the course of Gougerot-Sjögren disease should be treated as a separate entity requiring specific therapy.