The Cost of Private ADHD Assessments The general public is becoming aware of ADHD because of the celebrity appearances of Sue Perkins and Nadia Sawalha. However, the long NHS waiting periods leave certain people in a precarious situation. Some people are forced to pay for private treatments. In the UK, http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372697