Nathan Horton will miss his seventh straight game today because of a concussion. It will not be the last.

After yesterday's practice at TD Garden, coach Claude Julien acknowledged that Horton has suffered a setback. Horton first skated on his own last Sunday. But Horton's post-concussion symptoms, which have included headaches, resumed once Horton hit the ice.

"He's been pulled back,'' Julien said. "He's got some symptoms. So we've pulled him back. It's hard for me to come out every day with a step forward, step backward. He's back to square one. We're giving him some time here. Those symptoms, once he got on the ice, came back.''

Horton suffered the concussion Jan. 22 when he was hit by Philadelphia's Tom Sestito.