Nash left the Lakers' Sunday night home loss to the Minnesota Timberwolves in the first half and did not return to action. According to the Lakers, Nash visited a back specialist, Dr. Robert Watkins, on Monday, and Watkins recommended an epidural block, which is expected to be administered Tuesday.
In a statement, the Lakers said Nash would be re-evaluated after approximately 10 days.
Lakers coach Mike D'Antoni said following Sunday's game, "He was struggling physically tonight. You could see it on his face."
An eight-time All-Star, Nash was selected the NBA's Most Valuable Player in 2004-05 and 2005-06 while playing for the Phoenix Suns. He began his career with Phoenix in 1996, then had a stint with the Dallas Mavericks before returning to the Suns. He is in his second season with Los Angeles.