Bulging veins on the forehead are usually caused by venous filling, dilation of blood vessels, compression of the distal end of blood vessels, etc., which need to be treated as soon as they are detected. The phenomenon of raised veins on the forehead is usually caused by the expansion of the veins, the expansion of blood vessels is usually due to mental stress or emotional over-excitement, in addition, if the distal end of the blood vessels are compressed or narrowed, it will also cause blood vessels to be filled up and then appear the phenomenon of raised veins on the forehead. Therefore, patients should try to maintain emotional stability, avoid anger and stress, eat more vitamin-rich foods, develop good habits, avoid late nights and overwork.