The headache can be caused by the following reasons: First, the cold caused by feeling wind and cold can cause the wind evil to offend the guard, and the wind evil invading the head can cause headache. Second, when you have a cold, most of you will have symptoms such as nasal congestion, cough, sore throat, etc., which will affect your sleep and rest at night, and also lead to headache in the morning or during the day, which is a vascular tension headache. Third, it may be caused by low or high fever, and the rise of body temperature will cause the heart rate to increase and blood pressure to rise, which will also cause headache.