I think some signs of detoxing mercury can be crying, excessive salivation, skin rashes, depression, nervousness, anger, all signs of mercury moving and disrupting the very areas that it's already residing in, usually making things worse.

Metal taste, metal smell on the body after sweating. Increased urination, or changes in bowel habits like getting diarrhea etc. Headaches,all sorts of things can occur during mercury detox.

extreme moments of tiredness and inability to hardly even move. etc.