ADHD Diagnosis - Getting the Right One From the NHS For people to get an accurate diagnosis of ADHD, the NHS requires a thorough evaluation. The BBC investigation found that some private clinics could be giving an unreliable diagnosis or prescribing the wrong medication. A valid diagnosis for ADHD is https://telegra.ph/What-Freud-Can-Teach-Us-About-Private-Assessment-For-ADHD-03-06