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Intellectual functioning in non-Duchenne muscular dystrophy

From the Department of' Pediatrics and State Services for Crippled Children, The University of Iowa, Iowa City, IA.

Address correspondence and reprint requests to Dr. Karagan, 139 Hospital School Building, The University of Iowa, Iowa City, IA 52242.

Intellectual functioning was examined in 31 patients with Becker, facioscapulohumeral, or limb-girdle muscular dystrophy. IQ patterns were compared to those previously reported for patients with Duchenne muscular dystrophy. As with Duchenne patients, a high proportion of non-Duchenne muscular dystrophy patients showed a pattern of a lower verbal scale IQ in relation to their nonverbal, performance scale IQ. Further, there was a relationship between the levels of verbal and performance IQs and the type of muscular dystrophy, with the lower IQs being associated with the more severe types.

This study was supported in part by US. Public Health Service Grant No. 07-H-000044.

Accepted for publication June 25, 1980.