Background Attention deficit hyperactivity disorder (ADHD) has a strong genetic aetiology and high heritability. Biological relatives of children with ADHD have a substantial risk of developing this disorder. Accordingly. parents of children with ADHD are likely to have more symptoms of ADHD. https://www.spidertattooz.com/OPI-GelColor-Magnet-Tool-Mauvnetic-Poles-0-5-oz-p21159/