The trapezius muscle is troubling so many people you just cannot imagine.
Among others it may be responsible for your headache
If your trapezius contains trigger points, you can experience headaches as well as arm or upper back pain, depending on the localisation of these points.
It can contribute to the following pain symptoms. Click on the corresponding link to learn how to achieve relief.
For an even better localisation of trigger points in this muscle, just compare the trigger point number – displayed as “X” – in the pain zone pictures with the one in the picture shown under attachment points.
This way you will have no problems at all to locate them – if present -.
Any movements or activities that are mentioned in the “Function chapter” and under “Trigger point activation” may be painful or impaired when your trapezius contains trigger or tender points.
Furthermore, with too much tension in this muscle you may experience a stiff neck.
You remember that the upper part of this muscle helps to rotate your head to the other side, right?
So if this one is too tight, it hinders this movement and thus may contribute to your stiff neck.