The causes of tightness in the left temple include physiological factors and disease factors. Diseases include migraine, high blood pressure and insufficient blood supply to the brain. 1. Physiological factors: when the patient does not sleep well, emotional excitement, there may be symptoms of tightness in the left temple. 2. Disease factors (1) Neurogenic headache: mainly caused by nervous tension, excessive smoking and drinking, lack of sleep, coffee, strong tea, etc. are also prone to induce the disease. Headache occurs in the forehead, top of the head, temples, etc., and can be characterized as dull, throbbing or swelling pain, accompanied by dizziness, insomnia, fatigue, lack of concentration and other symptoms. (2) Hypertension: When blood pressure increases, symptoms of head stuffiness and swelling may appear, which may manifest in the left temple area. (3) Insufficient blood supply to the brain: seen in elderly patients with chronic diseases such as hypertension, diabetes, hyperlipidemia, etc. Insufficient blood supply to the cerebral arteries due to arteriosclerosis, stenosis, etc. can lead to symptoms of head swelling and pain. If the tightness of the left temple symptoms continue to be unrelieved, it is recommended to go to the hospital under the guidance of a professional doctor, to clarify the cause of the disease, targeted treatment.