My mother used to counsel younger mothers nervous with a rambunctious child, 'Don't worry, they'll grow out of it."
Apparently that's the case with most kids with attention deficit hyperactivity disorder.
ADHD Kids Can Get Better.
researchers found that some areas in the ADHD brain — particularly those involved in thinking, attention and planning — matured an average of three years later than "healthy" brains, but otherwise followed normal patterns of development.