ADHD Private Assessment - Getting an Accurate Diagnosis A nurse specialist or psychiatrist needs to conduct a private assessment to diagnose ADHD. Only healthcare professionals from the UK are able to diagnose ADHD. They will look for ADHD symptoms and mental health issues since childhood as well as school reports. https://marcoiazrf.blogdal.com/30217387/the-complete-list-of-adhd-assessment-private-dos-and-don-ts