Luis Suarez should seek professional help to stop him from repeatedly biting opponents, FIFA general secretary Jerome Valcke said on Friday.
Asked for his views on Suarez's four-month global ban for biting, Valcke told reporters: "I think he should find a way to stop doing it. He should go through a treatment. It is definitely wrong."
Uruguay striker Suarez was kicked out of the World Cup on Thursday for biting Italy defender Giorgio Chiellini during a Group D match on Tuesday.
It is the third time in Suarez's career he has been banned for biting.
Valcke dismissed comments from Chiellini on Friday who said the punishment on Suarez — the heaviest sanction of a player at a World Cup ever — >was too harsh .
"You will always find someone who says it's excessive," Valcke said. "It's not only him who says it's excessive."
When pointed out that Chiellini was the victim, Valcke replied: "So what? They are decisions which are made by the disciplinary committee based on what they have seen," Valcke said. "Again, it's not just about the incident — it was seen by hundreds of millions of people. It is not what you want, your kids, the little ones who are playing football around the world, to see in a football game at the level of the World Cup, or any level — amateur football or professional football."
Asked if Suarez's club — English Premier League giants Liverpool — were being unfairly punished by the sanction, he replied: "It's not Liverpool punished, it's the player being punished."