Don't know about the X-rays or scan as triggers; I was going to ask whether anyone has scalp lesions? I've been dyeing my hair for many years and now have a sensitivity that was just itching at first, but now is large bumps. This is my second bout with GD (last year it resolved quickly with a small amount of steroid cream) and it is on my back, abdomen and head. Steroid cream isn't cutting it; I'm making poultices of cider vinegar and clay, or cider v. and finely ground oatmeal. Able to sleep! Trying the cilantro smoothie as well.