3.1.2 Chronic cluster headache

A 48-year-old graphic designer has had bouts of one-sided head pain running continuously for a year now, with no gap in that time longer than a handful of weeks. She counts up to seven bouts on the worst days, each lasting around an hour and a half, occasionally closer to an hour and forty minutes. During every bout she is unable to sit still and paces around restlessly. The pain sits above her right eye and always stays on that one side. She rates the pain itself as the worst she has ever known, utterly excruciating. She has given up counting the episodes across the year, reckoning the true figure runs to many hundreds.