Burning sensation over Lumbard Area Only (Hot to touch)

I'm trying to figure out what is wrong with me. I have a constant burning sensation in my lower back which is only located in the lumbard area. There is no radiating pain anywhere else in my body. And what is really strange is that the area that is burning is hot to the touch. There is no sign of infection and it does not hurt it just burns. The burns started out as intermittent but now it is constant. Can someone please provide insight into what I may be suffering from?
Thank you,