ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that patients undergo a thorough evaluation in order to get an accurate ADHD diagnosis. The BBC investigation revealed that some private clinics might be handing inaccurate diagnoses and prescribing inappropriate medication. A valid ADHD diagnosis is based http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1372385