I was initially thought to just be suffering from POTS by some pretty well respected docs at Cleveland Clinic, but there were some outlying symptoms that just didn't add up. Ended up getting to see Dr. Carroll at Stanford and Dr. Wouter Schievink at Cedars-Sinai and they were able to visualize a leak, still in the process of trying to get blood/glue injections to work until I get through TOS surgery. After that it may end up coming to surgery for CSF as well.
Also, I hate to sound pessimistic but just want to try to give advice - from what I've heard anecdotally, TOS will slowly progress, especially in those with EDS. The younger you have surgery, the better the outcome as well. I tried to stick it out with some pretty seriously targeted physical therapy and bracing until I was 20 but shit just kinda hit the fan and I've had to opt for surgery.
There are 5-10 surgeons in the U.S. that are at the point of having really great outcomes, most notably Dr. Dean Donahue at MGH. I waited like 9 months to initially consult with him. As much as I loathe Facebook, here are some great groups with regards to knowledge of good surgeons if you ever decide to pursue that route. A bad surgeon for TOS is definitely a bit of a death sentence.
https://m.facebook.com/groups/15231937182
https://m.facebook.com/groups/205345126171314
P.S., apparently there's been a good amount of POTS cases induced by COVID-19 and not responding well to treatment. Doctor at Cleveland Clinic mentioned it to me, said they were a bit dumbfounded. Will definitely be interesting to see how things play out long-term, will hopefully end up giving POTS some more awareness it deserves. Also, I have great hope in Neuralink for EDS pain in the future. Hopefully.