 [ Symptoms ] is there a link between continually hives and sythetic thyroid medications  i just started to get hives on my body one day the dermatologists did the removal of possible triggers and nothing helped it has been about 3 and 12 yrs and i have to take antihistamine medications to keep them at bay i also have hypothyroidism for 15 yrs  and i heard synthetic medications may cause thyroid antibodies to react against the body causing the hives has anyone seen this connection [ Disease ] hi seems your the odd one as most cures are from gargling with sea salt water perhaps next time your next to the sea you should gargle with some sea salt water but not from the sea but from some real good sea salt do hope the helps you good luck