(1) persists or recurs for longer than 3 months
It is defined as pain in one or more body systems (eg, nervous, musculoskeletal, and gastrointestinal systems), and in any body site (face, low-back, neck, upper-limb, thorax, abdominal, pelvis, and urogenital region), or in a combination of body sites (eg, widespread pain) that: Chronic primary pain (CPP) is term that has been implemented in the latest revision of the International Classification of Diseases (ICD-11), which came into effect in 2022.
