Article Source: CNN

Nashville, Tennessee (CNN) -- When Ryan Wallace got a diagnosis of autism at age 2, his parents never thought they'd hear him speak."He used to make noises. When he wanted something he would just point," says Ryan's father, Gerald David Wallace. "Or he would scream."

Therapists say that's not unusual for someone with Ryan's condition. According to doctors, many children with autism have difficulty understanding information from the outside world.

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