MEGoody Paul’s thorn was not a physical sickness, he said it was a messenger of Satan that’s an evil spirit not a sickness. And it was not up to God because he already had authority over evil spirits in the name of Jesus. Thanks!
So some believe. Nevertheless, we know Paul had trouble with his sight. Gal 6:11 says "See what large letters I use as I write to you with my own hand!" We also know that Paul dictated several letters to others rather than write them himself.
So again, Paul had an affliction that God chose not to remove.