Have had sore eyes for several years swollen red left eye in last 24 hours. I had a TT last year for Ca? My query I have just transitioned to liothyronine from levothyroxine prior to going hypothyroid for a check scan on the 23rd Feb, would the fluctuating amount of T3 and T4 in my body provoked my auto immune system into this acute episode? I never had Graves but know that TED can be present on its own. Any advice on how to limit this acute episode to minimise any long term damage and disfigurement would be appreciated.