4.5.3 Probable cold-stimulus headache

A 7-year-old primary school pupil reports four occasions over the past few months of a sudden headache starting the moment he steps into the walk-in cold room to fetch crates of ice, the blast of freezing air hitting his face and head as the door opens, while helping out in a fish shop after school. Each time the headache has faded away again within about six minutes of him coming back out into the warm shop and sitting by the till. He reports no fever, no neck stiffness and no rash with any of these episodes, and returns to his usual cheerful self within minutes.