Many people have the experience of having headaches when eating cold or icy things, which is actually related to the stimulation of blood vessels and nerves. Of course, when something cold enters the mouth, it causes strong stimulation to the oral mucosa, which can easily lead to the constriction of blood vessels in the head and face, causing the central nervous system to be affected and leading to headaches. The headache appears in the middle of the brain or in the temples, temporal region, or frontal region on both sides, and the pain is instantaneous or unbearable. Especially for people with a history of migraine, migraine attacks are often triggered by eating cold or icy things. Therefore, patients should pay attention to avoid eating icy and cold things, avoid eating ice cream, and have a light diet in general.