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See-saw nystagmus: An unusual sign of brain-stem infarction

1974; Elsevier BV; Volume: 22; Issue: 4 Linguagem: Inglês

10.1016/0022-510x(74)90080-x

1878-5883

Frank Mastaglia,

Cerebral Venous Sinus Thrombosis

See-saw nystagmus is an unusual form of ocular involuntary movement which is not usually regarded as a sign of brain-stem ischaemia but has been more commonly associated with tumours in the region of the optic chiasm and diencephalon. The patient described in the present report demonstrated typical see-saw nystagmus in the acute phase after ponto-medullary infarction with associated skew deviation of the eyes and rotary nystagmus. The possible patho-physiological mechanisms involved in the production of see-saw nystagmus are discussed and the relationship between see-saw nystagmus and skew deviation is considered.