Spokeswoman Darlene Bieber said in a news release that the country star was singing his encore finale - "Alcohol" - when he fell Saturday night, but he got back up and finished his show. He was checked out at a Charleston hospital and released early Sunday morning.
Paisley was left with only some bad bruises, but he wrote on his Twitter page that he "hit hard. And I mean freaking hard."
The 37-year-old kept fans updated with several tweets on the Web site, quipping that doctors told him he "was a very brave boy."
Paisley, a native of West Virginia, was performing in Charleston to promote his latest album, American Saturday Night.