Hi,a dent in forehead has appeared. I think it s called the frontal vein . They re the ones that are the either side of the centre of the forehead and meet halfway down above the nose . With most people it tends to be bulging veins. But with me...I now have a dent/groove that I can put my nail in and run it down the groove. I don t know why this has happened and if there is a way to correct this. I have seen my doctor, who said its just aging . Are you able to help