Badhbt, Can I ask what kind of vision issues you get? I feel like every time I go to the doctor, I am adding another symptom. Crazy. After reading a couple of posts on this tread I want to figure out the cause so there is some hope of improving. Looneymom, I absolutely think the tremor is because of POTS. It is when I am standing or in certain positions. I did see that tremor is sometimes listed as a symptom of POTS and sometimes not. It is not because of medication as I was on none when it started. I was getting tremor when standing and overtime POTS reared its ugly head. I was going to tell you in the earlier post that when I started the beta blocker it did help the tremor in my hands. I don't think it is helping as much but I know it did in the beginning. It was enough that even if it had not helped my HR and BP, I would have been pleased. It has made me more tired then usual but at this point it still has more benefit then not.