The symptoms of headache in the afternoon, caused by the following main causes: 1, high blood pressure, low blood pressure in the morning, high blood pressure in the afternoon, hypertension patients who do not regularly take antihypertensive drug therapy, may cause high blood pressure, dizziness, headache and other discomfort symptoms, you can first measure the blood pressure. 2, too long lunch break, lunch break for 20 minutes, not more than half an hour, if the lunch break time Too long, can lead to symptoms of insufficient blood supply to the cerebral arteries, appear dizziness and other discomfort. 3, with the daytime work pressure, too tired related, after working all morning, the afternoon appeared tired, the spirit is in a state of high tension, the symptoms of tension headache, usually reasonable lunch break, do not have too much psychological pressure, the symptoms of headache, it is best to find out the cause of symptomatic treatment.