The Cost of Private ADHD Assessments ADHD awareness is increasing thanks to high-profile figures such as Sue Perkins and Nadia Sawalha, but long NHS waiting times have left some people who need an assessment in a precarious situation. Some have to pay for private treatment. In the UK it is http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372014