sulcata skin

Looking for help on these brown spots found in neck/shoulder area on both sides of head. Male, about 7 years old. Lives in SoCal. Has large heated indoor shelter and large yard to freely roam. His condo got pretty gross recently (not dry enough) so I fully cleaned it out. Will replace water pan...

Hello guys and gals, I found my 4yrs sulcata baobao currently has some wounds like marks on its neck as shown in the pic, he/she loves to scratch and ram the enclosure wall a lot, basically every afternoon after nap, I am wondering if it is bacterial infections or anything, it's like a scab...