If mercury symptoms are constant, then my problem is due not due to mercury, as my symptoms come and go, come and go, as do most autoimmune symptoms. However, I believe that most symptoms of mercury poisoning are cyclic due to what we do, (ie grinding teeth, drinking hot beverages, etc) and whether the mercury is in the blood, or has gone into the organs - (and it depends on which organs) - or whether or not mercury is being mobilized by something, etc.....