The Cost of Private ADHD Assessments ADHD awareness is growing due to the high-profile personalities such as Sue Perkins and Nadia Sawalha, but long NHS waiting times are putting those who require a diagnosis in a vulnerable position. Some sufferers are being forced to pay for treatments that are private. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1373103