One out of the causes of headache, mainly spasmodic headache, allergic headache, neurological headache, as follows:: 1, spasmodic headache: cold wind stimulation of blood vessels in the brain caused by cerebral vasospasm, affecting the blood circulation of the brain, the patient may have a history of hypertension, dyslipidaemia, cerebral arterial hypoperfusion, etc.; 2, allergic headache: the patient has a history of allergy to cold air, and some of them can have a cough, most of them are irritating Dry cough, wheezing and other symptoms; 3, neurological headache: headache most of the paroxysmal dull pain, stabbing pain and other symptoms. Patients should pay attention to the warmth of the head, wear a hat when going out, strengthen exercise, strengthen nutrition, eat more high-protein foods, such as eggs, milk, soy products, etc., to enhance immunity, you can go to the hospital to check the blood lipids, blood pressure, cerebrovascular ultrasound, etc., to rule out cerebrovascular disease.