The Scotland international clashed heads with Red Devils full-back Rafael in the second half of Norwich's 4-0 loss at Old Trafford, with play stopped for eight minutes while he received treatment.
He was stretchered off and later driven to a local medical facility, but Hughton is confident that no serious damage has been done, and indicated that a potential overnight stay would just be a precaution.
"He's gone to a local hospital," Hughton told reporters. "I think that is very much a precaution, he was out for a period of time. It is very much concussion.
"He has also taken a whack in the incident itself so they will have a look at that and X-ray that just to make sure there is nothing broken.
"But by the time he was on his way out he was awake and aware of what was happening around him. Whether he will he kept in overnight or not, I don't know."