[Association of polymyositis and rheumatoid arthritis. Apropos of a new case not related to drug ingestion].

Muscular manifestations are frequent during rheumatoid arthritis, mostly induced by drugs. In contrast with rheumatoid myositis whose existence has been debated, penicillamine induced polymyositis and dermatomyositis are well described. We report a case of rheumatoid arthritis associated with non-drug induced polymyositis.