This comprehensive edited volume synthesizes the current state of research and practice in psychological, medical, and motor disorders as they affect individuals with intellectual disabilities (ID). It examines how these disorders exist across this population, sometimes confound diagnosis, and often affect individuals' quality of life. In addition, this book explores which treatments are effective for patients and points to future challenges. Comorbid conditions featured include: Challenging behaviors. ADHD, autism, and other conditions present during early childhood. Anxiety, depression, and schizophrenia. Balance and gait problems. Cerebral palsy. Medical conditions common to persons with ID, such as epilepsy, obesity, and chronic pain. Comorbid Conditions in Individuals with Intellectual Disabilities is an essential resource for researchers, clinicians/professionals, and graduate students in clinical child, school, and developmental psychology, child and adolescent psychiatry, and social work as well as rehabilitation medicine/therapy, behavioral therapy, pediatrics, and educational psychology.