I can't help but wonder if the thyroid medication is the thing. If you have done any cleansing (or even taking supplements) then your body chemistry may have changed enough for the medication to become an allergen. Especially if your thyroid was affected by the candida (as mine was - I'm female and my doctor was giving me testosterone because my levels of it were so low - due to the candida). Maybe you need to get retested for the thyroid medication and see if you even need it anymore. Good luck!