How to Get an ADHD Private Diagnosis A private ADHD diagnosis can have a significant impact on your behavior, perspective, and plans. But it's not as simple as just booking an assessment. Doctors aren't trained to diagnose ADHD, so they can only refer you for an assessment by a specialist. https://telegra.ph/10-Tell-Tale-Signs-You-Need-To-Get-A-New-Private-ADHD-Testing-UK-03-07