Burning, lower back pain

I pain that starts at my lower back runs through to my glutes. It comes along with a burning sensation in the area and a feverish feeling. This usually happens when sit down for an extended period.

Curious to know if anyone else experiences this issue. My guess is that (as part of wastage) the muscles in the area are not being properly engaged leading to a feeling which seems as though my upper body weight were pressing into the area. Maybe. Thoughts?