Dysautonomia?

I was reading an article about the symptoms of Dysautonomia and my boyfriend has a lot of the symptoms. I think he may have but it hasn’t been diagnosed. Anybody have it and how do you handle it?

I know its very likely I’m just paranoid but I’ve lost a lot of people unexpectedly and I’m worried I’m gonna lose him. I want a plan in case he has it. I want to have an idea of how to support him. Thank you ♥️