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Possible factors

fibromyalgia include:

• Your sex
Fibromyalgia occurs more often in women than in men.

• Age
Fibromyalgia tends to develop during early and middle adulthood. However, it can also occur in children and older adults.

• Disturbed sleep patterns
It's unclear whether sleeping difficulties are a cause or a result of fibromyalgia — but people with sleep disorders, such as night-time muscle spasms in the legs, restless legs syndrome or sleep apnoea, can also develop fibromyalgia.

• Family history
The genetic factor should also be considered. You may be more likely to develop fibromyalgia if a relative also has had the condition.

• Rheumatic disease
If you have a rheumatic disease, such as rheumatoid arthritis, lupus or ankylosing spondylitis, you may be more likely to have fibromyalgia.

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