How to Get an ADHD Assessment From a Private Provider The NHS can take months, or even years to determine ADHD. This is due to a shortage of specialists and a high demand for services. There are fortunately private clinics that provide an efficient and complete alternative to the NHS. https://iampsychiatry55801.bloggazzo.com/29284309/a-help-guide-to-adhd-diagnosis-private-from-start-to-finish