[Muscular disorders of the patient with scleroderma. Clinical study].

In scleroderma, the scapular striated muscles may be affected showing rapid fatigability, and sometimes, muscle wasting with EMG changes. The smooth muscle changes, well known in the esophagus, where they lead to loss of peristalsis, may also be marked in other parts of the digestive tract. They lead to various symptoms, such as cramps, vomiting and diarrhea.