So this little recue I got a few days ago is eating just fine and seems to be thickening up already and isnt acting strange at all. He hangs out in his hide most of the time. My question though is about halfway down his body his color fades and it almost feels like he has torn muscles. You can feel ridges all along his sides. Very strange! It almost seems like he doesnt have a lot of feeling in that area either. His first half he responds to and also the tip of his tail, but the faded and dented part he doesnt. Almost like not enough circulation to that part of him? I don't know. Any ideas? (PS: He just shed so I know it's not that, and his husbandry is awesome now)

Notice the color change from front to back:




Here you can see the denting that you can feel with no mistake:




I know he is underweight, but I dont think he is supposed to fell like that