dr. joshua weiner joins us. autism may be overdiagnosed in about 9% of children.ll us about that. >> there is overlap. the vast majority of kids on the spectrum will have many of the symptoms associated with adhd. that's where the confusion comes in, especially for these kids who are not severely impacted by the autism. >> autism is generally found in a child early, isn't it? before they go to school. adhd perhaps diagnosed after starting school? >> some more severe cases, the language delays in particular, those kids will be coming to parents attention earlier. at the age of 3 or 4. you're right, adhd tends to be diagnosed around the age of 7. but the thing is, if a child is exhibiting many signs that are concerning to parents, they're not engaging with other kids, they don't seem to be interested in parents, when parents come up to them and are coming home after a day of work, if a kid doesn't seem that interested or won't look at them, seems indifferent to things around them, parents need to take that seriously. even if the pediatrician says this is normal, may