[QUOTE=Bosko;1642764553]Back in 2006 my Dad had an episode of Guillain-Barré syndrome.
I had to climb to a second story window and break into his house, he didn't answer the phone for 2 days.
There he was on the floor and couldn't move or talk!
Within in 30 hours he was back to 100% normal, the Doctors were shocked......[/QUOTE]
Your dad would be an extreme outlier if it really was Guillain-Barre. I am almost sure it wasn't. The etiology is an autoimmune response against your own peripheral nerves. That simply doesn't go away in a day or two even with massive doses of steroids. We can't completely shut down the immune response and get the inflammation to resolve that fast. My guess is your dad had something else.
As far as costochondritis, it does get better. I'm surprised you guys weren't given NSAIDS, although they'd likely have a minimal effect on recovery time. My 105lb daughter was doing hip thrusters with some stupid amount of weight and her elbow slipped or something while she was levering her back onto the bench. She has a very localized costochondritis now too because she dislocated one of her upper ribs transiently. I told her it would be a couple of months before she could do any serious lifting that flexes that area. Otherwise she'll just prolong the inflammation. Hope you guys get better soon.