yes it can be related. my thyroid was removed in 1973 when i was 21 yrs. old due to benign adenoma. i took armour for 10 yrs. then switched to synthroid for 10 yrs. in 1991 i began having severe hives and red burned face. my family dr. immediately suspected thyroid meds. allergists insisted no way was it that. i suffered for 8 months until my gynecologist took me off synthroid hives immediately began subsiding then on armour and hives returned but looked different. took me off all hormone for 6 weeks and follow up with endocrinologist. said i would feel very tired - but i felt great. all my levels were normal and have remained so for 21 yrs.
i've been taking levothyroxin for over a year. i have developed a rash/hives that comes and goes. is this related?