The Cost of Private ADHD Assessments ADHD awareness is on the rise because of high-profile celebrities such as Sue Perkins and Nadia Sawalha However, the long NHS waiting times are putting some people who need a diagnosis in a precarious situation. Some patients are required to pay for private treatment. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372732