Do you have any other hyper symptoms? I can get irritable if I'm too high or too low. (And as a 12yo I think I probably argued w my mum a lot. So there's that. )
My understanding is that T3 speeds you up and T4 slows you down. In the brain, you need a balance of both hormones. I know I was easily irritated when taking too much T3, and extremely passive on T4-only.
When you start taking ndt it is advisable to slowly increase your dose over a matter of months, it took months to find the right balance or even splitting your dose can help, it sounds like your having an overload of your senses, I have been in that position but with me I had a low steroid count so now need regular injections.
Have you had any bloods done recently? b12 deficiency could also be an issue but so many things could be out of balance, try taking some vitamin d3 (not one with calcium) holland&barrett do a good one, just look for the yellow container's, this should help.
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