Just to say - if you're struggling with asthma or are coming out of a bad patch and have been given pred and your ribs still hurt - don't assume it's 'just' costochondritis (even though this is ouch ouch ouch and also needs sorting if possible) as you *might* - obviously not definitely - have Vit D deficiency.
I got rib pain during/after last pred course, thought it was costochondritis as I had that last year. I mentioned it in an appt (almost as an afterthought as I wasn't sure it was necessarily relevant or something they could do anything about) and the dr asked if I'd been taking anything for my bones while on pred. I said no, had no idea I needed that if not on it all the time and he said actually bones have a lot of the significant loss early on with steroids. So he tested me for Vit D: finally got results back and turns out yes, I am definitely deficient (sheet gives ranges for deficient, insufficient, adequate and optimal).
So worth considering though I know everyone is different and you'd need to discuss it with GP/cons etc.
(Am slightly puzzled though as results were attached to clinic letter with no discussion or indication of what they're planning to do about it - would kind of assume they would give supplements or something but not sure - emailed CNS to say 'umm, should I do something about this?')