DD11 doesn't have ADHD but she has the occasional tics. It would either be.. clearing of throat, twitching of eye or the corner of mouth. We realised that it will happen when she is under stress or when holiday starts (because she loves school and her friends). Our GP recommended Omega oil cos he thinks it is partly neurological and has to do with brain functions (his son has tic too). I tried it but in the end, I believe stress is the main culprit. DD knows of her condition. So we talk alot to reduce her anxiety if possible.