Hi all!! I’ve been experiencing the same symptoms, and it turns out that it’s a weird presentation of acid. I had tremors/palpitations/hot flashes/chills/etc. I adjusted my diet to very small meals and no fried food/caffeine/alcohol, and that reduced many of the symptoms but I still had CRAZY nighttime tremors. Out of despair, I started sleeping with my head and entire torso elevated….and the evening tremors stopped! If you haven’t tried this, give it a go—can’t hurt, anyway. I was astounded because I didn’t have a lot of the typical symptoms of acid reflux, but it seems my sleeping position played a role. The tremors will come back if I sleep on one side vs the other, so pay attention to that too.