This most definitely can happen and has happened to me in the past following an infection or flu.I think it's happened to me recently-still waiting for blood test result.My GP agrees that illnesses like this can affect thyroid function.I hope the raise in levo helps you feel better.Perhaps you will need to stay on this new dose of thyroxine permanently or maybe other adjustments will need to be made over time.
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Thank you for your reply - it looks like this is something else I need to become more aware of. I've been on the higher dose of levo for a few days - already better than last week!
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