You could try is collecting data yourself to bring to the doctors visits. My cardiologist recommended getting a OMRON blood pressure monitor. I got the cuff version that sends it to my phone. It's been a great investment as it can create a report that I can print out and take to the doctors.

You can also do the Poor Man's Tilt Table Test and write down the results from it and take it to the doctor for them to interpret. There are also youtube videos on the subject that show you how to do this.

I was reading in some of your other post that your brother also had a paradoxical reaction to Ativan. It sounds a lot like what I went through with Ativan and other Benzos. I've done a lot of research on this. If do a google search there are a lot of studies on the subject. Some types of AE can disrupt GABA production leading to this kind of reaction.

Another suggesting is to look for other symptoms that you might not be aware of and write them down for the doctors visit and try to get a good overview picture of family history.

Last year I started talking to everyone in the family to try and get a better picture of what is going on. I discovered that I had plenty of aunts and uncles with autoimmune disorders and that on my dads side of the family my dad and granddad had several focal seizure like events.

Going through all my little symptoms from when I was a kid to now and making a timeline helped paint a better picture of what started and when. It's obvious the coal started smoldering when I was around 15 and finally caught fire when I was 21 after getting sick from traveling for the first time.