A tendon above the left temple is generally a feeling of swelling and pain, there are many reasons, such as irregular work and rest, colds, high blood pressure and other causes. 1. Irregular work and rest: due to poor rest or poor sleep, shorter sleep will appear temple swelling and pain, can be improved after rest. 2. Cold and flu: some people may have symptoms of swelling in the temple area after catching a cold, such as sneezing, fever, runny nose and so on. 3. High blood pressure: High blood pressure can cause high pressure on the walls of blood vessels, which can also easily lead to the problem of swelling and pain in the left temple. It is recommended to develop good habits in daily life, reduce stress, avoid overwork, and go to the hospital for examination if the symptoms are not relieved for a long time.