I have a fist size bruise on my back (mid back) with no trauma/injury and had my husband not inform me it was there, I would have been none the wiser. Its not going away though. Duration about 2.5 weeks. I also have recently had a skin issue start up on my legs (very acute I might add). If I read into my internet search, it sounds like it is Lichen Planus. I have a Dr s appt scheduled, but its a few weeks away. Should I be more concerned? No meds (other than the occasional Alleve (Naproxen) for headaches…intermittent).