Like a smouldering fire that can be hard to spot, your body may be suffering from chronic low grade inflammation.
Not all inflammation is bad. Acute inflammation is a normal response to trauma or injury. If you burn yourself, break a bone, or damage a joint, your body will attempt to repair any damage and protect itself. Part of that repair process is acute inflammation. Your body is attempting to isolate the area, kill off any infection, and get rid of dead cells and tissues before they can do more damage.