My son was diagnosed with enthesitis last year. At that time the inflammation was in his upper thigh. Now the inflammation seems to be in the back of his heel. My question is do any of your kids with arthritis ever have periods of not feeling well, kind of a overall sick/achy/feverish feeling. My son's fecal calprotectin has recently come back normal but he hasn't been able to walk on his foot in about 2 weeks now so I am wondering if this sick feeling that I always attribute to Crohn's might be attributable to the enthesitis related arthritis instead. Anyone have any thoughts on this?