No leg to stand on

BMJ 2004; 329 doi: (Published 14 October 2004) Cite this as: BMJ 2004;329:894
  1. Alexander Clark, specialist registrar in radiology (
  1. University Hospital of North Staffordshire

    “She was bisected, and half of her was missing.” This is how Dr Oliver Sachs perceived a nurse during the aura of a migraine. It is described in his book A Leg to Stand On, in which he explains how this experience is due to a transient hemianopia that he experiences as a migraine begins.1

    I too have migraine with visual auras, which occur only in the left side of my visual field. Although I usually experience fortification spectra within the left hemi-field, I realised recently that occasionally I have a left homonomous hemianopia …

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