ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that people undergo a thorough assessment in order to receive a proper ADHD diagnosis. The BBC investigation revealed that some private clinics might be handing inaccurate diagnoses and prescribing inappropriate treatment. A reliable diagnosis of ADHD is http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372194