Brachydactyly-nystagmus-cerebellar ataxia is a syndrome involving brachydactyly with one short metacarpal and metatarsal, nystagmus and cerebellar ataxia. Patients also suffer mental deficiency and strabismus.

The syndrome was described in four generations of a single family. However, only few members have all the features of this disorder. The underlying genetic causes of this disorder are unknown.