ADHD Diagnosis - Getting the Right One From the NHS To give people an accurate diagnosis for ADHD the NHS requires a thorough assessment. The BBC investigation found that certain private clinics could be distributing inaccurate diagnoses and prescriptions. A legitimate diagnosis for ADHD is based on the severity, number, http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=860123