I'm suspecting mercury poisoning (for various reasons). I've got a constant burning feeling in my head. Especially in the morning. I always adressed it as part of my allergies. But now these symptoms are getting worse. It is usually in one spot, but the location can change. When I did a search for it, I came across this website: http://www.mercurypoisoned.com/burning.html Does anyone have the same symptom?