 In this study we will include 300 male or female out-patients, aged 18 years or above, with acute episodes of soft tissue rheumatism affecting the shoulder less than 5 days. The main inclusion criteria will be: Shoulder pain of acute onset of non-traumatic origin, a history of painless unrestricted motion of the affected joint immediately before the acute attack, acute one-sided shoulder pain caused by soft tissue rheumatism, patient-assessed pain on active movement exceeding 50 mm on a 100-mm visual analogue scale and symptoms requiring therapy with NSAIDs. 