From the Reddit site, discussing a rumor that was going around that Christopher Hitchens was taken off a plane on a stretcher, because of “breathing difficulties”:
Well it’s not a certain diagnosis, but this sort of thing isn’t uncommon. It’s why you’re supposed to get up and walk around every three hours on long flights. It would be the most likely cause of developing ‘breathing issues’ on a transatlantic flight
Except when it’s lupus.