Editing Temporomandibular joint dysfunction (section)

===Possible associations===
TMD has been suggested to be associated with other conditions or factors, with varying degrees of evidence and some more commonly than others. 75% of people with TMD qualify for a fibromyalgia diagnosis and, conversely, 18% of people with fibromyalgia met diagnostic criteria for TMD.<ref name="Kindler 2011" /> A possible link between many of these chronic pain conditions has been hypothesized to be due to shared pathophysiological mechanisms, and they have been collectively termed "central sensitivity syndromes",<ref name="Kindler 2011" /> although other apparent associations cannot be explained in this manner.  Recently a plethora of research has substantiated a causal relationship between TMD and Obstructive Sleep Apnea (OSA).  Severe TMD restricts oral airway opening, and can result in a retrognathic posture that results in glossal blockage of the oropharynx as the tongue relaxes in sleep.  This mechanism is exacerbated by alcohol consumption, as well as other chemicals that result in reduced myotonic status of the oropharynx.

* Obstructive sleep apnea.<ref>https://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0013523/{{full citation needed|date=November 2017}}</ref><ref>{{cite journal | vauthors = Miller JR, Burgess JA, Critchlow CW | title = Association between mandibular retrognathia and TMJ disorders in adult females | journal = Journal of Public Health Dentistry | volume = 64 | issue = 3 | pages = 157–63 | year = 2004 | pmid = 15341139 | doi = 10.1111/j.1752-7325.2004.tb02746.x }}</ref> 
* Headache.<ref name="Kindler 2011" />
* Chronic neck pain.<ref name="Kindler 2011" />
* Chronic back pain.<ref name="Luther 2010" /> 
* Systemic joint laxity.<ref name="Wassell 2008" /> 
* [[Rheumatoid arthritis]].<ref name="Wassell 2008" />
* Irritable bowel syndrome.<ref name="Kindler 2011" />
* Interstitial cystitis.<ref name="Kindler 2011" />
* Regular [[scuba diving]].<ref name="Scully 2008" /><ref name="Zadik 2011">{{cite journal | vauthors = Zadik Y, Drucker S | title = Diving dentistry: a review of the dental implications of scuba diving | journal = Australian Dental Journal | volume = 56 | issue = 3 | pages = 265–71 | date = September 2011 | pmid = 21884141 | doi = 10.1111/j.1834-7819.2011.01340.x | doi-access = free }}</ref>