People with intellectual disability are more likely to experience mental health difficulties, and their treatment responses may differ from those in the general population.This book, written by leading clinical practitioners from around the world, provides comprehensive guidance on prescribing for people with intellectual disability, as well as general information on their clinical care.The guidelines have been conceived and developed by clinicians working in intellectual disability services.Combining the latest evidence and expert opinion, they provide a consensus approach to prescribing as part of a holistic package of care, and include numerous case examples and scenarios.Now in its fourth edition, this update reflects the changes in prescribing practice; it places emphasis on clinical scenarios and case examples and includes input from service users and their families.This is a practical guide for busy clinicians, and a valuable reference for all primary and secondary healthcare professionals.