ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that patients undergo a thorough examination for an accurate ADHD diagnosis. The BBC investigation found that certain private clinics might be distributing incorrect diagnoses and medications. A valid ADHD diagnosis is based on symptoms, their severity, duration https://telegra.ph/The-10-Most-Worst-Private-ADHD-Failures-Of-All-Time-Could-Have-Been-Avoided-04-08