Children, like adults, may have mental health problems, including depression and anxiety. They may also have behavioral conditions, such as conduct disorders; cognitive disorders, such as autism spectrum disorder; or neurological conditions, such as Tourette Syndrome. Children may also be affected by delays in their physical, cognitive, or emotional development. The 2007 National Survey of Children's Health asked parents whether their children had ever been diagnosed with, and currently had, any of these seven conditions. This chartbook addresses the health and well-being of the population of children whose parents reported that their children had at least one of these conditions. Note, however, that these data are based entirely on parental reports and have not been independently verified; in addition, they only include children whose parents reported that they have been told that they have one of these conditions by a doctor or other health care provider. This chartbook presents a range of indicators on the health and well-being of children who have been diagnosed with emotional, behavioral, or developmental conditions on the national level. For each state, this report shows the prevalence of the seven conditions (grouped together) and the major demographic characteristics of children who have at least one of the conditions. Together, these data paint a picture of a large and diverse population of children with multiple, complex needs. These children and their families may need services--including mental and physical health care, special education, and social services and support--from a variety of systems and providers. These analyses provide a useful first step in delineating the relationships among these conditions, children's socioeconomic characteristics, and access to health care. However, much more research is needed to fully understand these complex relationships. Appended are: (1) Technical Appendix; and (2) Survey Questions on the Presence of Conditions. (Contains 2 footnotes.) [For related reports, see "Children with Special Health Care Needs in Context: A Portrait of States and the Nation 2007. The National Survey of Children's Health 2007" (ED530916); "The Health and Well-Being of Children: A Portrait of States and the Nation 2007. The National Survey of Children's Health 2007" (ED530918); and "The Health and Well-Being of Children in Rural Areas: A Portrait of the Nation 2007. The National Survey of Children's Health" (ED530919).]