Cohen-Cymberknoh M, et al. - This inquiry was set up to investigate Attention Deficit Hyperactivity Disorder (ADHD) symptoms in patients with Cystic fibrosis (CF). A substantially higher occurrence of ADHD symptoms was reported in CF patients, compared with the general population. ADHD symptoms in this population were recommended be acknowledged as a co-morbidity of CF. In addition, adherence to therapy in these subjects could be impaired by ADHD.