Radiation and changes to skin & thyroid

I burned very badly during radiation, but was very pleased when the burn disappeared rather quickly and skin felt soft to touch; however, six months later, it's very dark in large area around scar and is rough to the touch. Have any of you had this happened six to seven months after your radiation, and if so, what did you do and did it help?

Also, did any of you go back to see radiologist after you finished. Mine suggested I return in April but I never did.

Also, I've been on thyroid medication for seven years with no issues, but last TSH is above normal, despite medication. Endocronologist today asked about my radiation and CT experiences. Anyone else have this happen after radiation or multiple CT's (or, possibly, herceptin). Thanks.