I have a year old red bar panther and the back of his head is swollen. You can not see it but when you touch it it's really squishy. He has always had a problem with eating, he doesnt eat as much as he should but he does eat about 4 to5 bugs a day. A few days ago he shed, but only on the back of his neck. I went to get him a bunch of new bugs today and when i got back and started feeding him i noticed that he had a few spots on the back of his head that hadn't shed yet. I felt it seeing if it would just fall right off and when i did i noticed his head was really squishy. You can't really tell from a picture but you can def feel it. I don't know if i should give him some shed aid, or if i should just leave it alone. The only other detail that i can add is that yesterday or the day before(can't remember which one) he drank an unusually large amount of water from the spray bottle. In the pictures it his the back of his head not his nose. It is really hard to notice. Please let me know what you think! We are worried parents! 
