To cite: McDonnell D, Park G. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2014207755 DESCRIPTION A 21-year-old man was taken to the emergency department after having fainted. He had hit his head and lost consciousness for a few seconds, and his friends witnessed a shaking episode during this time, although there was no tongue biting or incontinence. He sustain...