When parents first discover their child has AD/HD, they often rush out to find a psychologist or counselor to help him work through his problems. What you need to know beforehand is how psychotherapy differs from behavioral therapy.
While behavioral therapy treats core AD/HD symptoms (impulsivity, attention-span problems, or hyperactivity), individual counseling does not. However, it can be useful in some cases as supplemental treatment, when AD/HD is accompanied by extreme anxiety or depression.
Teenagers, in particular, may gain support and confidence through hashing out their feelings with a therapist or counselor. Remember that counseling is not a cure for AD/HD - and can't supplant medicine and/or a good behavioral program.