RITALIN DOES'T LEAD YOUTHS TO ADDICTION. Dr. Donohue --syndicated column Dear Dr. Donohue: My 9 year old grandson has attention -deficit disorder. He takes Ritalin. I am fearful that it might damage his brain or set him up for durg addiction later in ife. Is Ritalin a harmful drug? How does it work? --LA. Attention deficit hyperactivity disorder --ADHD--its something that was not diagnosed when we were children. It existed then but was not recognized as being a treatable condition. Now there are criteria that establish its diagnosis, and now there are treatments tht help many children contend with it successfully. Input from parents, teachers, doctors and mental health experts is needed before diagnosis is made and before treatment is begun. The label should not be given to children without the consensus of all these people in order to prevent over diagnosis and unnecessary treatment. Children with ADHD find, it is impossible to sit quietly for more than a few minutes. Their concentration is fleeting. Rarely are they able to complete assigned tasks. They are not learning impaired, but their grades often do not reflect their true intellectual ability because their impulsiveness and constant turmoil make it difficult for them to excel in school . Ritalin is the most frequently prescribed drug for ADHD. It keeps norepinephrine, a messenger brain chemical, adequately supplied to brain cells and to regions of the brain that must be activated to keep attentin focused on the task at hand. Response to Ritalin is extraordinary. Close to 75 percent of ADHD children respond favorably to it. A new drug, Strattera, is avaiable for children who do not benefit from Ritalin . Ritalin doesn't harm the brain and there is no evidence yet that Strattera does. They do not predispose treated children to drug addiction in later life,. In fact , ADHD children who take Ritalin have lower rates of addiction than ADHD children who go untreated. end article Ida J. Camburn Power corrupts the few while weakness corrupts the many. --Eric Hoffer.