I've been having an terrible experience when ever I'm descending to Barcelona. My ears would clog so bad that it would even hurt for a couple of seconds. That it self doesn't cause a problem. The thing that irritates me is that it takes a couple of days to regain my original hearing level, which is often followed with a headache (I don't have any hearing problem, nor any health issue).
I've descended to multiple cities and only experienced this while landing to Barcelona. I've landed to other cities which stand at sea-level and didn't experience such issues.
On my ultimate landing, I tried the valsalva maneuver, as well as chewing, swallowing and other things that could possibly unclog the ears. None of it was efficient.
Are there any preventives for this case? It's really annoying to deal with if every time after the specific flight. Furthermore I'm scared that it can damage my hearing in a long time.