According to the report, the condition involves loss of blood flow to some part of the brain. It is temporary (less than five minutes) but has a reversible loss of function and is treatable.
Kubiak collapsed on the field as he was headed to the locker room after the first half of the Texans' game against the Indianapolis Colts. The Colts came back from an 18-point deficit to win the game 27-24.
He was taken to a local hospital and was said to be in stable condition. The team said he underwent a "battery of tests" on Monday.