The Cost of Private ADHD Assessments ADHD awareness is growing because of high-profile celebrities such as Sue Perkins and Nadia Sawalha however, long NHS waiting times are leaving some people who need the diagnosis in a vulnerable position. Some patients are being forced to pay for treatments that are private. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1914464