Vertical ‘half-and-a-half’ syndrome
- Division of Neurology, University Medical Center Rizk Hospital, Beirut, Lebanon
- Correspondence to Dr Rechdi Ahdab, Division of Neurology, University Medical Center Rizk Hospital, Achrafieh, Beirut, Lebanon; chadahdab{at}hotmail.com
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Contributors RA performed the clinical evaluation and wrote the first draft. NR reviewed the initial draft and wrote the final draft.
- Received 29 December 2011
- Accepted 25 April 2012
- Published Online First 21 May 2012
Introduction
Strokes in the territory of the thalamo-subthalamic paramedian artery cause unilateral damage to the thalamo-mesencephalic junction. They are associated with several types of vertical gaze disorders because they interrupt the descending fibres that serve vertical gaze.1 These strokes classically result in the vertical ‘one-and-a-half’ syndrome2 that associates bilaterally upward with ipsilateral downward gaze palsy. The contralesional monocular elevation palsy represents another vertical gaze disorder previously described.3 ,4 We report a case of a thalamo-mesencephalic stroke that resulted in a …
