Editing Chronic pain (section)

===ICD-11===
In [[ICD-11]] chronic pain is classified under MG30.
<ref>https://icd.who.int/browse/2025-01/mms/en#1581976053</ref>

An IASP task force had proposed a seven-category classification for chronic pain for ICD-11.<ref name="Treede-2015">{{Cite journal|last1=Treede|first1=Rolf-Detlef|last2=Rief|first2=Winfried|last3=Barke|first3=Antonia|last4=Aziz|first4=Qasim|last5=Bennett|first5=Michael I.|last6=Benoliel|first6=Rafael|last7=Cohen|first7=Milton|last8=Evers|first8=Stefan|last9=Finnerup|first9=Nanna B.|date=June 2015|title=A classification of chronic pain for ICD-11|journal=Pain|volume=156|issue=6|pages=1003–1007|doi=10.1097/j.pain.0000000000000160|issn=1872-6623|pmc=4450869|pmid=25844555}}</ref>

# Primary chronic pain: Defined by 3 months of continuous pain in one or more areas of the [[Human body|body]], the origin of which is not understood.
# Chronic cancer pain: pain in one of the body's organs caused by [[cancer]] damage (in [[internal organs]], [[bone]] or [[skeletal muscular]]) is formed.
# Chronic pain post-[[Major trauma|traumatic]] or [[surgery]]: Pain that occurs 3 months after an injury or surgery, without taking into account [[Infection|infectious]] conditions and the severity of tissue damage; also, the person's past pain is not important in this classification.
# Chronic [[neuropathic pain]]: pain caused by damage to the [[Somatosensory system|somatosensory nervous system]].
# Chronic [[headache]] and [[orofacial pain]]: pain that originates in the head or [[face]], and occurs for 50% or more days over a 3 months period.
# Chronic visceral pain: pain originating in an internal organ.
# Chronic musculoskeletal pain: pain originating in the bones, muscles, [[joint]]s or [[connective tissue]].

Also, the [[World Health Organization]] (WHO) stated that optional criteria or codes could be used in the classification of chronic pain for each of the seven categories of chronic pain (for example, "''diabetic'' neuropathic" pain).<ref name="Treede-2019" />

The ICD-11 also includes the category of "Chronic widespread pain" (CWP) code MG30.01. This is diffuse pain in at least 4 of 5 body regions, and is associated with emotional distress or functional disability.<ref>{{Cite web |title=ICD-11 for Mortality and Morbidity Statistics |url=https://icd.who.int/browse11/l-m/en#/http://id.who.int/icd/entity/849253504 |url-status=live |archive-url=https://archive.today/20180801205234/https://icd.who.int/browse11/l-m/en%23/http://id.who.int/icd/entity/294762853#/http://id.who.int/icd/entity/849253504 |archive-date=1 August 2018 |access-date=2022-04-09 |website=icd.who.int}}</ref>