ADHD Diagnosis - Getting the Right One From the NHS The NHS requires that people undergo a thorough assessment in order to receive an accurate ADHD diagnosis. The BBC investigation found that certain private clinics may be distributing incorrect diagnoses and medications. A valid ADHD diagnosis is based on symptoms, https://articlescad.com/private-diagnosis-of-adhd-tips-from-the-top-in-the-industry-354797.html