I have a recurring sometimes constant pain that feels like a bruise , but there is never any bruising . Recently it has been on my thighs making it extremely painful to even sit. My thigh feels tight like there might be swelling , but there is none. It sort of feels as though the skin has been removed on my thigh and the muscle is exposed. It is quite painful. I get this achy pain mostly in my thighs and I m not quite sure if it actually goes away or if I start to tolerate it. The only variation that I have noticed is that it is not always on the back of my thighs, but also on the fronts and sides, as well as sometimes it occurs in my arms and back.