1.4.2 Persistent aura without infarction

A 41-year-old delivery driver reports a bright, sparkling patch of visual aura in the left half of his vision, noticed on three occasions in his lifetime, this being the third attack of this kind. This time the disturbance has stayed fixed to the left side and has not resolved, now just over a week in duration. He says a headache developed within the hour of the visual symptom starting and has persisted alongside it, dull rather than throbbing. He denies any weakness, slurred speech or sensory change, and reports no fever or neck stiffness. He mentions that a scan performed this week showed no infarct on imaging.