[Diagnostic problems posed by hypotrophic facio-scapulo-humeral syndromes (author's transl)].

The Authors, on the ground of the literature and of their own observations, stress the diagnostic non specificity of hypotrophic facio-scapulo-humeral syndromes: these sindromes, contrary to the current opinion, aren't always of primitive myodistrophic nature but may also be "neurogenic", inflammatory, collagenopathis, etc. In this connection they present an illustrative case of facio-scapulo-humeral syndrome which had clinical features typically "myogenic" but turned out to be "neurogenic" after electromyographic and histochemical investigation.