Familial episodic ataxia: clinical heterogeneity in four families linked to chromosome 19p.

Abstract:

:We describe the clinical and oculographic findings in 4 families with episodic ataxia and interictal nystagmus (EA-2) linked to chromosome 19p. Episodes varied from pure ataxia to combinations of symptoms suggesting involvement of the cerebellum, brainstem, and cortex. Some affected individuals exhibited a progressive ataxia syndrome phenotypically indistinguishable from the dominantly inherited spinocerebellar ataxia (SCA) syndromes. About one-half of the affected individuals had migraine headaches and several had episodes typical of basilar migraine. Oculographic findings were localizing to the vestibulocerebellum and posterior vermis. Additional genetic and environmental factors must account for the marked clinical heterogeneity in these families with an abnormal gene on chromosome 19p.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Baloh RW,Yue Q,Furman JM,Nelson SF

doi

10.1002/ana.410410105

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

8-16

issue

1

eissn

0364-5134

issn

1531-8249

journal_volume

41

pub_type

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