Should i be concerned that i have a large vein or veins bulging on my right temple, but have no headache or pain?

Veins: You might want to see a vascular surgeon. You might have a obstruction below those veins.

Usually an artery: Usually those large bulging vessels are arteries. Put your index finger lightly over it and see if you feel a pulse? Also vessels on the forehead that look blue are veins, and if look clear or skin color- they are arteries. There is nothing you need to do. Some patients have sclerotherapy for cosmetic treatment of the blue or purple face veins and laser. For red spider veins.