There are several possible causes of headaches caused by coughing: First, it may be a cough caused by a cold or flu itself, which can also cause headache symptoms at this time. Second, if you do not sleep well at night or rest well because of a cough, it can also cause a headache when you wake up the next day. Third, when coughing is intense, it can cause nerve and blood vessel pulling pain in the head, which is vascular tension pain. In general, headache caused by coughing should be treated first, and appropriate oral cough medicines such as dextromethorphan oral solution can be taken. If the headache is obvious and severe, you should go to the hospital to check the blood pressure and head CT to exclude the brain nerve lesions.