With myofascial pain syndrome, muscles become tense and taut, and nearby jointrange of motionmay decrease.

To raise your head to see, you use your uppertrapezius muscle.

The trapezius muscle now may be working more than it is used to.

Neck and shoulder pain

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This overuse may cause microscopic muscle injury, which may lead to muscle spasms and pain.

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Comparison of activation and change in the upper trapezius muscle during painful and non-painful computer work.J Phys Ther Sci.

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Myofascial Pain and Dysfunction: The Trigger Point Manual.

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