SUMMARYThis editorial introduces the second of two special issues of BJPsych Advances on neurodevelopmental disorders, including intellectual disability, autism spectrum disorder, attention-deficit hyperactivity disorder and epilepsy. Topics discussed in the issue include using technological advances such as apps to manage epilepsy in intellectual disability, person-centred support and integrated care, training, and non-restrictive approaches and appropriate medication for managing self-injurious and challenging behaviour.