My 10 yr old has been on Intuniv for 18 months. He was diagnosed with seveer ADHD, OCD since 3 yrears old. He has been on every medication out there. Ritalin, Concerta and Strattera gave him severe ticks. Intuniv was our "Wonder Drug". He is on 3mg and Dr says can not go higher. He also takes Abilify. All of a sudden it is not working and all the old symptoms are coming back.