Going from less than 800,000 to almost 4 million. This is rapidly becoming a big problem. Children are being putting into special education where they do not belong, thus depriving them of their suited education.
Reasons can range anywhere from enviormental conditions to brain damage.
The real cause is the gap in communication. There are several different defintions but it all depends on how one interprets them and which one chooses to go by. There is no line that seperates an LD from a normal person.