Significance of upward gaze palsy (Parinaud's syndrome) in hydrocephalus due to shunt malfunction

Abstract

✓ Several cases are presented in which Parinaud's syndrome or upward gaze palsies were associated with hydrocephalus due to non-neoplastic aqueductal occlusion. In some of these cases the ocular signs proved to be an early and reliable indicator of increased intraventricular pressure due to shunt malfunction. The possible mechanisms by which this phenomenon occurs are discussed. The importance of differentiating such cases from those of neoplastic origin and the value of third ventriculography are stressed.