4.5.2 Headache attributed to ingestion or inhalation of a cold stimulus

A 38-year-old staff nurse reports six occasions over recent years of a sudden, tight pain gripping the front of her forehead, each one starting within moments of eating a spoonful of very cold sorbet during hospital breaks. On every occasion the pain has faded away comfortably within about five minutes of her setting the spoon aside and sipping some water at room temperature. She reports no accompanying visual changes, no confusion and no limb weakness with these brief episodes. She has noticed the same pattern every time, always tied to the very cold sorbet.