ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that people undergo a thorough examination in order to receive the correct ADHD diagnosis. The BBC investigation found that certain private clinics could provide incorrect diagnoses and medications. A valid ADHD diagnosis is based on the symptoms https://telegra.ph/7-Essential-Tips-For-Making-The-Most-Of-Your-Private-ADHD-Assessment-Edinburgh-06-07