1. Kevin Black 28 June 2019 at 10:17The report below finds tics are 4-6 times more common in children with ADHD vs. without ADHD. The presence of tics is associated with clinical problems and lower quality of life.Poh W, Payne JM, Gulenc A, Efron D: Chronic tic disorders in children with ADHD. Arch Dis Child. 2018; 103(9): 847–852. DOI 10.1136/archdischild-2017-314139