Dyscalculia in patients with vertigo.

This paper reports a hitherto undescribed relationship between vertigo of central origin and dyscalculia. Subjects with vertigo skipped and displaced decades when counting backwards by two. The error is not recognized when presented visually. The subjects also display decrements in ability to do mental arithmetic and in central auditory processing. The results are discussed in light of the relationship between the central vestibular/auditory system and structures involved in higher cognitive function. The relationship between balance disorders and children with learning disabilities is also examined.