They warn not every difficulty requires a medical response and there is a risk of blurring the lines between diagnosable ADHD and autism and what should be considered the "normal human variation in brain function, cognition and behaviour".
Around a third of 16 to 24-year-olds not in education, employment or training (NEET) report their mental health or autism as a factor.
There should no longer be a first-come, first-served approach.