Bruises always lining up on my shins.

okay so if had this for a while, especially when i used to run allot, although i knew i had shins split and i took care of it but now it more of getting inflamed bruises up my shins, (from knee to ankle). its very painful to the touch and you can clearly see its inflamed. I havnt ran in a while and im pretty sure i dnt have shins split but this im just wondering what it can be. its not bruises like me hitting my self on something, i also get them on my right leg but there not as severe. Have you ever heard of something like it?