[zdragnar]

My brother has this permanently, though whether a delayed reaction to the booster or from when he got COVID itself (a relatively mild case) not long after, there's no way to know.

It has been a major detriment to his day to day life though. Any physically involved hobbies are impossible; just walking up a flight or two of stairs now leaves him completely winded for several minutes, as his heart rate also takes longer to come back to resting than before.

Would not recommend.

[im3w1l]

Maybe it's running at high rate to compensate for some issue? An issue that could be found and resolved?

[zdragnar]

He's seen all the specialists. I think they ultimately came down on neurological damage, and tried a battery of drugs until they found some that slightly mitigated the problem. Last we talked about it, though, it hasn't been fully resolved.

[scotty79]

That sounds like a relatively common Covid side effect.