Autism is the fastest growing developmental disability in the U.S. Researchers thought of it as a life-long disorder, but that might not be the case.
Jack's mom Leslie knew something was different about her son.
Leslie Griggs, Jack's mother, "He wasn't making a lot of eye contact. He didn't have any words."
Jack has autism. Leslie says daily therapy sessions have made all the difference for him.
"What do you like to eat? I like to eat french fries. Good!"
"He seems like he's more aware of us being in his world. He's not in his own little world anymore."
While jack has shown big improvements, a new study suggests some kids may actually "outgrow" the disorder. Researchers looked at 34 patients with autism who were diagnosed by age five, but now appear to function normally. The study found they no longer meet the criteria for autism. In fact, in tests looking at socialization and communication, the autism patients performed just as well as typical children.
Chaouki Khoury, Director Our Children's House at Baylor University in Dallas says: "Now I can say there's a chance that your kid might outgrow it."
Doctor Khoury says, he's encouraged by the new study, even though the research did not examine why the patients seemed to "outgrow" the disorder.
Dr. Khoury: "How do you outgrow biting your nails? You learn not to bite them. So outgrowing a behavioral problem is basically learning a different behavior that takes over."
Some believe it's the intensive therapies that cause the dramatic improvements, others think the kids may be on a different part of the autism spectrum that predisposes them to outgrow the condition without therapy.
Leslie hopes with therapy Jack will "swing" into even bigger improvements and possibly outgrow his autism.
Leslie Griggs: "Every parent, I think, hopes the diagnosis will fall off."
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.