CLEVELAND — Rockets coach Stephen Silas was treated for dehydration in the locker room after leaving the court during the team’s 124-89 loss to the Cavaliers on Wednesday night.

Silas motioned to assistant coach John Lucas to take over the team as he walked off the floor late in the first quarter. He remained in the locker room for the remainder of the first half.

The Rockets said Silas was receiving fluids from their medical staff. Lucas continued to serve as acting coach when they returned to the floor for the third quarter, and Houston ultimately ruled out Silas for the game.

“He’s OK, he’s better,” Lucas said. “We were slowly drifting when Coach left and we lost our composure for about five minutes after. They just had us at everything.”

Silas, 48, is in his second season in charge of Houston and has a 26-73 record. He is the son of longtime NBA coach and Celtics big man Paul Silas.