Summary
Muscle knots in the trapezius muscle are commonly caused by stress and poor posture.
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Additional symptoms may include jaw pain.
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Trigger points in the trapezius muscle can be activated by acute and strong traumas, repetitive motions, and mechanical stress.
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To check for a knot in the trapezius muscle, grab onto the muscle between the neck and shoulder joint and give it a squeeze.
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To find the AC joint, trace the collar bone outward until you feel the end of it.
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Grip the AC joint with your thumb and index finger and slowly wiggle it back and forth.
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According to
