Should there be a single definition of child illness? Should what qualifies as a chronic condition of childhood be defined in absolute or relative terms?
Over the past 2 decades, many research and policy groups have recommended different approaches to conceptualizing, defining, and measuring child illness and wellness. Scholars disagree on almost every dimension of child health status: whether to define health status based on specific diagnoses, functional state, or health care use or need; how to account for the severity of a condition; whether to include children at risk but not yet diagnosed; and whether to limit definitions to traditionally medical (as separate from behavioral) conditions. There is even debate about the amount of time a child experiences a certain condition before it should be categorized as chronic: 3 months, 6 months, or 12 months—or expected to last that long.
Davis MM, Brosco JP. Being Specific About Being SpecialDefining Children's Conditions and Special Health Care Needs. Arch Pediatr Adolesc Med. 2007;161(10):1003–1005. doi:10.1001/archpedi.161.10.1003