This seems to be how it goes with me and family who have low thyroid
With hypothyroidism do you still get manic days... - Thyroid UK
With hypothyroidism do you still get manic days where you've got a weird high level energy?
Thyroid-male
I'd say that's possibly more likely to be when Hashi's is present rather than non-Hashi's hypothyroidism. I'm non-Hashi's Hypo and in the 45 years since being diagnosed I can honestly say I have never experienced a day when I have high energy levels.
Manic feeling YES I do occasionally get this super burst of craziness feeling with high pulse and fast breathing it comes and goes I always chalked it up to my meds which I always thought was weird since Im 100% compliant on taking my meds at the same time each day .... I do not have Hasimotos.
I have Hashi's and since being diagnosed I have never had a day with high level of energy. I have had days with very little energy or "can almost function properly" energy, but never at the same level as when I was healthy and very active. To add, when I am overmedicated I get anxiety, I become irritated easily, but the energy levels remain pretty much the same.