Hello, one of my twin boys with ADHD has developed a physical tic since taking methylphenidate. The tic has got worse & he is now self conscious & annoyed about it . We've had a 2 wk break from meds over Easter (argh caravan in new forest argh!) but tic just about the same. Has anyone else had experience of this please? I'm worried that it is here to stay. We have a CAMHS review nxt week & will talk about poss changing meds- any idea if tic will go & if so, how long it takes???