The reason for “ice-cream headaches”, also known as brain freeze, isn’t clear.
They are caused by ingesting something very cold, and tend to strike migraine sufferers as a group more than the population at large.
Some researchers think that ice-cream headaches are caused by the constriction of blood vessels in the mouth and throat.
The vessels get smaller, so blood may get slightly backed up in the head, causing pain.
For more information on this and other intriguing body reactions, try visiting your head doctor.