When I was first diagnosed with AS in my 20's, that was one of the kickers. A doctor described it as 'pissing razor blades'. It went away, and never came back...so yes, it can be part of the package, and no, it doesn't have to be what the rest of your life feels like. Good luck.
Quick edit to say I think that blister thing came up as well, but nobody ever associated it with the AS. It went away, too.