The presence of one or more disorders (or diseases) in addition to a primary disease or disorder
the simultaneous appearance of two or more illnesses comprehensive developmental assessment an evaluation completed for a child of preschool age to determine the developmental status of the child in cognition, physical, communication, adaptive and self-help skills
A concomitant but unrelated pathologic or disease process; usually used in epidemiology to indicate the coexistence of two or more disease processes (Stedman T L 1990, Medical Dictionary, 25th edn, Williams & Wilkins, Baltimore)
Coexisting (usually chronic) conditions that may affect overall health and functional status beyond the effect(s) of the condition under consideration
{i} (Medicine) existence of other diseases or medical conditions in addition to the primary medical problem (influences recovery time and methods of treatment)
Significant cardiac, respiratory, or metabolic problems that signal transporting certain injured patients to a trauma center
A co-existing condition that will cause an increase in the principal diagnosis length of stay of at least one day in approximately 75% of the cases