Do you know what type of tachycardia they have ie sinus tachycardia or atrial fibrillation, or indeed another?
Also are they on treatment for the thyroid at all?Or for the tachycardia? Or other ailments?
And do we know the exact cause of the hyperthyroidism ie autoimmune/toxic nodule/multinodular goitre/drug-related or other cause?
Hows their blood pressure?
More information is required!!
I am paranoid of my brain. It thinks all the time, even when I'm asleep. My thoughts assail me. Murderous lechers they are. Thought is the assassin of thought. Like a man stabbing himself with one hand while the other hand tries to stop the blade. Like an explosion that destroys the detonator. I am paranoid of my brain. It makes me unsettled and ill at ease. Makes me chase my tail, freezes my eyes and shuts me down. Watches me. Eats my head. It destroys me.