A case of bad prawns?

A distressed middle-aged woman who presents with a recent history of vomiting and epigastric pain receives an unexpected diagnosis

Karen, a 53-year-old woman who had not previously attended our medical centre, presented with a recent history of recurrent vomiting and epigastric pain.

Her symptoms had started the previous evening, about half an hour after eating a prawn curry in a restaurant. She requested a prescription for some medication to stop her vomiting.