The cause of fibromyalgia is considered as complex as its clinical presentation.
Study Process
All patients were admitted based on widespread pain lasting longer than 3 months.
Patients and controls were then initially evaluated by a rheumatologist.

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Fibromyalgia was assessed in all patients by questioning about common complaints associated with the disease.
Patients with or without fibromyalgia were also compared for the frequency of joint hypermobility.
The presence of joint hypermobility was more common in this group than in the controls.
Conclusions
The association between fibromyalgia and joint hypermobility is not totally understood.
Joint hypermobility may cause widespread arthralgia in patients due to misuse or overuse of hypermobile joints.
Data from this particular study indicated:
Joint hypermobility was first featured in rheumatology literature in 1967.
Today, joint hypermobility is better understood and more widely recognized.
Autoimmune Association.What is Fibromyalgia?