Oh, yes, those symptoms are common as weeds around this forum. My most debilitating one was headache. Headsplitting in the beginning so I though I was poisoning myself, occasional dull ache now. I've had skin eruptions, pain at old vaccination sites, mysterious crawly sensations, constipation more than diarrhea when I'm not having normal bowel function. Much of my fatigue was related to ongoing hypothyroid, so it's hard to differentiate what was detox and what was that. I'm convinced some of the detox was from my thyroid, and have had throat ache and thyroid swelling. Iodine in particular ramped up brain detox of old psych meds so that black depression threatened till I backed off. Taking separate amount of iodide in SSKI helped a great deal, and I continue pairing Iodoral with SSKI even now.
Hubby has many, many stories of spectular detox effects which caused him to have to take breaks, because he'd just keep getting worse till he did stop. We've had drippy, snotty episodes, coughing out lung gunk, he had diarrhea every now and then. You're in good company!
Yes. Some people have found that after a break, with their decks clean, iodine goes into its rightful receptors, and you find out what it feels like to be high-functioning. Till the next round of detox. Your body decides what gets help first, then second, then third, etc.