Hi, I have a question about a sensation I m feeling in my back. I m experiencing no back pains, but I do feel a kind of bruised sensation on a particular spot on my lower back right around the spine area. Again, there s no pain, but it does feel like someone stuck a tennis ball in there and its sticking out. Doesn t actually look that way, but that s what it feels like, and it feels most pronounced when I bend over to pick up something. It s been on and off for a couple of years. I m fully functioning as an adult, and exercise regularly with no problem. Any idea as to what this could be?