Steph, See my response to you in Dog Lover/Kendra's post, okay? Now the Keloids make sense.
Also, if you have trouble absorbing B12 through your digestive system, swallowing a tablet with B12 won't help. Unless you've actually had it tested, you can't say for sure what your B12 is up to!
I think you need better doctoring. Probably a new rheumatologist. Damn, I'd be so ticked off about the interstitial lung disease being missed. That'll cause your O2 sats to drop. Idiots.
Hang in there.
Annie