Reid was taken to Whiston Hospital, near Widnes, and was being kept in overnight for observation.
The fight turned into an almighty struggle which Reid was a little fortunate to survive as his French challenger proved to be far more durable than had been expected. He matched the champion through 12 untidy but exciting rounds.
After three pulsating final minutes, Reid edged a split decision by 116-113, 117-111 and 113-115, but his third successful defence is tainted by the knowledge that improvement is essential if he is to retain his unbeaten record and his title for much longer.
Reid gave a television interview directly after the fight and then left the ring for his dressing-room. Shortly afterwards, a stretcher was rushed from ringside to the dressing-room and the news came from Reid's camp that he had collapsed and was receiving treatment.
Reid was given oxygen for dehydration and then taken to hospital, but his co-trainer, Pat Barrett, said: "There's nothing to worry about. He just collapsed through exhaustion."
After the fight, Reid admitted he could have done better, but he said: "Cherifi put up a hell of a fight and I had to dig really deep. I do not like to make excuses, I did train very, very hard."Reuse content