My son has been diagnosed ADHD at 8 yrs, was taking ritalin for 3 years, then concerta. The meds only act as a concentration booster. He has been refereed for neuro feedback. Brain analysis reveals high imbalanced Theta, low frontal SMR, Inadequate Beta1, SMR low during a cognitive task. Can taking concerta for so long cause this condition, have I done more harm than good