Well I got the 10 year old male sulcata home the other day. He is eating well but has diarrhea, it looks alot like a baby humans poop. Also he has a sore under one of his ears. Its not bleeding or anything just noticeable.
The sore looks like a minor scrape and should heal. I would just watch it. Could put antibiotic ointment on if you want. ...and if he will let you!
The poop is totally affected by diet. It can be from a large load of flagellates, but most commonly just diet related. If kept colder, that also seems to sometimes produce softer stools. Hopefully that hay he's eating will change that!