How to Get an ADHD Assessment From a Private Provider The NHS can take months, or years to determine ADHD. This is due to a lack of specialists and a high demand for services. There are fortunately private clinics that offer the fastest and most comprehensive alternative to the NHS. https://jaidenevjvh.thelateblog.com/30288529/adhd-diagnosis-private-tips-from-the-top-in-the-industry