My boyfriend got a very bad bruise on his left forearm and now it is very black and purple. However, there is an extremely unusual normal skin-colored line going through the bruise. I play many impact sports, so bruises aren t uncommon for me, but I ve never experienced a bruise with a skin-colored line going through it. Should we be worried and get it checked out by a doctor? Or should we relax and let it heal on its own?