Travel Insurance

I was wondering how everyone handles travel. According to my extended health insurance, my son would not be covered for this condition for up to 6 months after diagnosis, or any treatment for the medical condition.
But I wonder since his risk is high for a bleed/stroke with his AVM, if he would ever be able to get health coverage. Maybe it would just cost quite a bit extra to be covered?
Has anyone had experience with this?
Also does everyone fly in an airplane? I have read different views on this. Our neurosurgeon would just say, “just go and live your normal life.” grrr… lol
Thank you.

Oops. Just found the posts about flying so cancel that. I’m still learning my way around here.

Okay, then I’ll close this discussion and post the link to the “Holidays/Flying” discussion.