They behave exactly as you describe, by getting larger, usually self limit, then regress or
fall off.
Jonny, of Alnwick, Northumberland, died seven years ago after suffering from the rare condition Epidermylosis Bullosa (EB) which causes a breakdown in the proteins which hold skin together, meaning his skin could literally
fall off at the slightest touch.
I thought 'I've got to get out' and I jumped out and saw the car
fall off the cliff.
Unfortunately, the fate of never having to
fall off again was not written for me.
They try to stay on the wave as long as they can before they
fall off.
If you
fall off while riding on the flat or jumping and hit your head hard on a fence or the ground, it's a good idea to replace your helmet.