Bogaerts played in Boston's home opener on Monday, but he felt sore when he woke up on Tuesday.
The injury snuck up on Bogaerts.
"He was rounding third base, held up and there was a little bit of a slip," Farrell said. "He continued on in the game with no issue, no complaint, no word of anything. Even after the game he didn't feel anything. He came in today with increased symptoms."
Bogaerts has been red hot to start the season, hitting .433.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.