Editing Arthritis (section)

== Classification ==
There are several diseases where joint pain is the most prominent symptom. Generally when a person has "arthritis" it means that they have one of the following diseases:
* [[Hemarthrosis]]
* [[Osteoarthritis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/osteoarthritis/| title= Osteoarthritis|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Rheumatoid arthritis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/rheumatoid-arthritis/| title= Rheumatoid Arthritis
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Gout]] and [[Calcium pyrophosphate deposition disease|pseudo-gout]]<ref>{{cite web |url= https://www.lecturio.com/concepts/gout/| title= Gout|website=The Lecturio Medical Concept Library | date= 9 September 2020|access-date= 22 August 2021}}</ref>
* [[Septic arthritis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/septic-arthritis/| title= Septic Arthritis
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Ankylosing spondylitis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/ankylosing-spondylitis/| title= Ankylosing Spondylitis
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Juvenile idiopathic arthritis]]<ref>{{cite journal | vauthors = Prakken B, Albani S, Martini A | title = Juvenile idiopathic arthritis | journal = Lancet | volume = 377 | issue = 9783 | pages = 2138–2149 | date = June 2011 | pmid = 21684384 | doi = 10.1016/S0140-6736(11)60244-4 | s2cid = 202802455 }}</ref>
* [[Adult-onset Still's disease|Still's disease]]<ref>{{cite journal | vauthors = Akkara Veetil BM, Yee AH, Warrington KJ, Aksamit AJ, Mason TG | title = Aseptic meningitis in adult onset Still's disease | journal = Rheumatology International | volume = 32 | issue = 12 | pages = 4031–4034 | date = December 2012 | pmid = 20495923 | doi = 10.1007/s00296-010-1529-8 | s2cid = 19431424 }}</ref>
* [[Psoriatic arthritis]]<ref>{{cite web| vauthors = Garrick N |date=14 April 2017|title=Psoriatic Arthritis|url=https://www.niams.nih.gov/health-topics/psoriatic-arthritis|access-date=24 November 2021|website=National Institute of Arthritis and Musculoskeletal and Skin Diseases|language=en}}</ref>

Joint pain can also be a symptom of other diseases. In this case, the person may not have arthritis and instead have one of the following diseases: 
* [[Psoriasis]]<ref>{{cite web|title=Questions and Answers About Psoriasis|url=https://www.niams.nih.gov/health_info/psoriasis/|website=National Institute of Arthritis and Musculoskeletal and Skin Diseases|access-date=22 April 2017|url-status=live|archive-url=https://web.archive.org/web/20170422134800/https://www.niams.nih.gov/health_info/psoriasis/|archive-date=22 April 2017|date=12 April 2017}}</ref>
* [[Reactive arthritis]]<ref>{{cite web|title=Reactive Arthritis|author=American College of Rheumatology|access-date=24 January 2017|url=http://www.rheumatology.org/I-Am-A/Patient-Caregiver/Diseases-Conditions/Reactive-Arthritis}}</ref>
* [[Ehlers–Danlos syndrome]]<ref>{{cite web |url= https://www.lecturio.com/concepts/ehlers-danlos-syndrome/| title= Ehlers-Danlos Syndrome
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Iron overload]]<ref>{{cite book | vauthors = McDowell LA, Kudaravalli P, Sticco KL | chapter = Iron Overload |date=2021 | chapter-url= http://www.ncbi.nlm.nih.gov/books/NBK526131/ | title = StatPearls|place=Treasure Island (FL)|publisher=StatPearls Publishing|pmid=30252387|access-date=24 November 2021}}</ref>
* [[Hepatitis]]<ref>{{cite web | title=Hepatitis | website=MedlinePlus | date=20 May 2020 | url=https://medlineplus.gov/hepatitis.html | access-date=19 July 2020 | quote=Your liver is the largest organ inside your body. It helps your body digest food, store energy, and remove poisons. Hepatitis is an inflammation of the liver.}}</ref><ref>{{cite web|title=Hepatitis|url=https://www.niaid.nih.gov/diseases-conditions/hepatitis|website=NIAID|access-date=2 November 2016|url-status=live|archive-url=https://web.archive.org/web/20161104002228/https://www.niaid.nih.gov/diseases-conditions/hepatitis|archive-date=4 November 2016}}</ref>
* [[Lyme disease]]<ref>{{cite web |url= https://www.lecturio.com/concepts/lyme-disease/| title= Lyme Disease
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Sjögren's disease]]<ref>{{cite web|title=What Is Sjögren's Syndrome? Fast Facts| url= http://www.niams.nih.gov/health_info/sjogrens_syndrome/sjogrens_syndrome_ff.asp|website=NIAMS|access-date=15 July 2016| date= November 2014| url-status= live |archive-url= https://web.archive.org/web/20160704210602/http://www.niams.nih.gov/Health_Info/Sjogrens_Syndrome/sjogrens_syndrome_ff.asp|archive-date=4 July 2016}}</ref>
* [[Hashimoto's thyroiditis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/hashimotos-thyroiditis/| title= Hashimoto's Thyroiditis
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Celiac disease]]<ref name=GuandaliniAssiri2014>{{cite journal | vauthors = Guandalini S, Assiri A | title = Celiac disease: a review | journal = JAMA Pediatrics | volume = 168 | issue = 3 | pages = 272–278 | date = March 2014 | pmid = 24395055 | doi = 10.1001/jamapediatrics.2013.3858 }}</ref>
* [[Non-celiac gluten sensitivity]]<ref name="FasanoSapone2015">{{cite journal | vauthors = Fasano A, Sapone A, Zevallos V, Schuppan D | title = Nonceliac gluten sensitivity | journal = Gastroenterology | volume = 148 | issue = 6 | pages = 1195–1204 | date = May 2015 | pmid = 25583468 | doi = 10.1053/j.gastro.2014.12.049 | doi-access = free }}</ref><ref name=VoltaCaio2015>{{cite journal | vauthors = Volta U, Caio G, De Giorgio R, Henriksen C, Skodje G, Lundin KE | title = Non-celiac gluten sensitivity: a work-in-progress entity in the spectrum of wheat-related disorders | journal = Best Practice & Research. Clinical Gastroenterology | volume = 29 | issue = 3 | pages = 477–491 | date = June 2015 | pmid = 26060112 | doi = 10.1016/j.bpg.2015.04.006 }}</ref><ref name="CatassiBai2013">{{cite journal | vauthors = Catassi C, Bai JC, Bonaz B, Bouma G, Calabrò A, Carroccio A, Castillejo G, Ciacci C, Cristofori F, Dolinsek J, Francavilla R, Elli L, Green P, Holtmeier W, Koehler P, Koletzko S, Meinhold C, Sanders D, Schumann M, Schuppan D, Ullrich R, Vécsei A, Volta U, Zevallos V, Sapone A, Fasano A | display-authors = 6 | title = Non-Celiac Gluten sensitivity: the new frontier of gluten related disorders | journal = Nutrients | volume = 5 | issue = 10 | pages = 3839–3853 | date = September 2013 | pmid = 24077239 | pmc = 3820047 | doi = 10.3390/nu5103839 | type = Review | doi-access = free }}</ref>
* [[Inflammatory bowel disease]] (including [[Crohn's disease]] and [[ulcerative colitis]])<ref>{{cite web |url= https://www.lecturio.com/concepts/crohns-disease/| title= Crohn's Disease
|website=The Lecturio Medical Concept Library | date= 28 August 2020
|access-date= 22 August 2021}}</ref><ref>{{cite web |url= https://www.lecturio.com/concepts/ulcerative-colitis/| title= Ulcerative Colitis
|website=The Lecturio Medical Concept Library | date= 26 August 2020
|access-date= 22 August 2021}}</ref>
* [[Henoch–Schönlein purpura]]<ref>{{cite web |url= https://www.lecturio.com/concepts/henoch-schonlein-purpura/| title= Henoch-Schönlein Purpura
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Hyperimmunoglobulinemia D with recurrent fever]]
* [[Sarcoidosis]]<ref>{{cite web |url= https://www.lecturio.com/concepts/sarcoidosis/| title= Sarcoidosis|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[Whipple's disease]]<ref>{{cite web |url= https://www.lecturio.com/concepts/whipples-disease/| title= Whipple's Disease
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>
* [[TNF receptor associated periodic syndrome]]<ref>{{cite journal | vauthors = Rezaei N | title = TNF-receptor-associated periodic syndrome (TRAPS): an autosomal dominant multisystem disorder | journal = Clinical Rheumatology | volume = 25 | issue = 6 | pages = 773–777 | date = November 2006 | pmid = 16447098 | doi = 10.1007/s10067-005-0198-6 | s2cid = 41808394 }}subscription needed</ref>
* [[Granulomatosis with polyangiitis]] (and many other [[vasculitis]] syndromes)
* [[Familial Mediterranean fever]]<ref>{{cite book | vauthors = James W, Berger T, Elston D | date = 2005 | title = Andrews' Diseases of the Skin: Clinical Dermatology | edition = 10th | publisher = Saunders | isbn = 0-7216-2921-0 }}</ref>
* [[Systemic lupus erythematosus]]<ref>{{cite web |url= https://www.lecturio.com/concepts/systemic-lupus-erythematosus/| title= Systemic Lupus Erythematosus
|website=The Lecturio Medical Concept Library |access-date= 22 August 2021}}</ref>

{{anchor|undifferentiated}}
An ''undifferentiated arthritis'' is an arthritis that does not fit into well-known clinical disease categories, possibly being an early stage of a definite [[rheumatic disease]].<ref>{{cite journal | vauthors = Wollenhaupt J, Zeidler H | title = Undifferentiated arthritis and reactive arthritis | journal = Current Opinion in Rheumatology | volume = 10 | issue = 4 | pages = 306–313 | date = July 1998 | pmid = 9725091 | doi = 10.1097/00002281-199807000-00005 }}</ref>