A New York Times Op Ed piece titled “Diagnosing the Wrong Deficit” by Vatsal D. Thakkar, MD was published April 28 (http://www.nytimes.com/2013/04/28/opinion/sunday/diagnosing-the-wrong-deficit.html?ref=opinion). The piece is persuasive, since the author not only summarizes research to support his position, but also has personal experience having been misdiagnosed with A.D.H.D. before finally found to have an atypical form of narcolepsy. His argument, that many persons diagnosed with A.D.H.D. have undiagnosed sleep problems, is one that I have been making for some time. He goes on to say that internists, pediatricians, and psychiatrists should routinely screen for sleep disorders as part of their diagnostic process. I agree, and go further to extend that list to school psychologists, school counselors, and child clinical psychologists since symptoms leading to an A.D.H.D. diagnosis most often first are seen at school. Also, sleep problems do not have to rise to the level of a clinical disorder such as narcolepsy or obstructive sleep apnea to affect children’s attention, learning, memory, and behavior. Since many of the pharmaceuticals prescribed for A.D.H.D. impair sleep, those treatments may well be counterproductive in many instances. I hasten to add that all the forgoing does not imply that all persons with A.D.H.D have significant sleep problems or that A.D.H.D. is not a genuine disorder.