RT Journal Article SR Electronic T1 Chronic spinal muscular atrophy of facioscapulohumeral type. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 285 OP 289 DO 10.1136/jmg.13.4.285 VO 13 IS 4 A1 Furukawa, T A1 Toyokura, Y YR 1976 UL http://jmg.bmj.com/content/13/4/285.abstract AB Chronic spinal muscular atrophy of FSH type affecting a mother and her son and daughter is reported. The relevant literature is reviewed and the relation between this conditon and Kugelberg-Welander (K-W) disease is discussed. Chronic spinal muscular atrophy of FSH type is considered to be a different entity from the eponymous K-W disease. Each type of muscular dystrophy, e.g. limb-girdle, FSH, distal, ocular, or oculopharyngeal type, has its counterpart of nuclear origin. A classification of the chronic spinal muscular atrophies is suggested following the classification of muscular dystrophy.