Pain in the blood vessels on the side of the neck is mostly caused by bad posture, trauma and diseases, etc. It is recommended to consult a doctor. 1. Bad posture: If you are in a bad posture such as keeping your head down for a long time due to work, study and life reasons, it is easy to cause pain at the artery. In addition, getting cold or sleeping on an inappropriate pillow can also cause or aggravate the symptoms. 2. Trauma: If the neck is traumatized, such as soft tissues, peripheral blood vessels and nerves are damaged, resulting in aseptic inflammation, it will also cause radiating pain at the arteries. 3. Disease: If there is lipoma, sebaceous cyst, arteritis or malignant tumor on one side of the neck, it will easily lead to changes in the local pressure and internal environment, which will be manifested as pain on one side of the neck, and pain in the arteries will also be manifested from time to time. There are many other causes of vascular pain on one side of the neck, if rest does not relieve, it is recommended to consult a doctor in time for examination and targeted treatment.