ADHD is attention deficit hyper disorder, this means that someone has problems focusing and controlling their actions. An article “The Worldwide Prevalence of ADHD: A Systematic Review and Metaregression Analysis” published by The All American Journal of Psychiatry talks about ADHD and it’s prevalence around the word. They created a study that tested why attention deficity hyper disorde estimates were highly heterogeneous and why this was so porrly understood. They used data from North America, South America, Europe, Asia, Oceania, and the Middle East. ADHD experts gave out surveys to kids that were 18 and younger to determine were there were the most cases. The results that were found were “The literature search generated 9,105 records, and 303 full-text articles were reviewed. One hundred and two studies comprising 171,756 subjects from all world regions were included. The ADHD/HD worldwide-pooled prevalence was 5.29%. This estimate was associated with significant variability. In the multivariate metaregression model, diagnostic criteria, source of information, requirement of impairment for diagnosis, and geographic origin of the studies were significantly associated with ADHD/HD prevalence rates. Geographic location was associated with significant variability only between estimates from North America and both Africa and the Middle East. No significant differences were found between Europe and North America.” It is being treated by prescription medication like Ritalin or Adderall. This disorder is heavily influenced by culture but not so much biology. This disorder is more common in areas like America and Europe and areas that have been exposed to this illness and have integrated it as a part of society. Attention deficit hyper disorder is as often misdiagnosed in children. Children are hyper by nature and parents unforuntanly deal with this by giving their child medication instead of channeling this energy into something productive. ADHD is found in many parts if the world but is more common in areas that have grown accustomed to it making it a culture bound syndrome.