An Epidemic of Attention Deficit Disorder – NYTimes.com.

There is no doubt that a small percentage of children, perhaps 5 percent, have the disorder and that medication can alleviate the symptoms, such as inability to concentrate, that can impede success in school or in life. Some studies have shown that medications helped elementary schoolchildren who had been carefully evaluated for A.D.H.D. improve their concentration and their scores on reading and math tests.

Recent data from the Centers for Disease Control and Prevention showed that 15 percent of high-school-age children had been diagnosed with the disorder and that the number of children taking medication for it had soared to 3.5 million, up from 600,000 in 1990. Many of these children, it appears, had been diagnosed by unskilled doctors based on dubious symptoms…