A small muscular nod, or specifically a trigger point, can be responsible for pain in parts of the body that are quite some distance from where the nodule is itself.
It is common for a trigger point in the low to mid back to radiate pain and discomfort into the shoulders and neck. This neck and shoulder pain is likely to cause pain in the head that can be a dull ache or a sharp, intense pain.
This particular kind of treatment is designed to work on the nodule directly. There is specific, controlled pressure that is applied to the trigger point. After a few seconds of pressure, it is released. During this type of treatment, the patient participates and communicates by identified areas of discomfort.
By relieving the trigger points in a muscle, it is allowing the muscle knot to loosen. Patients often experience relief following treatment. Regularly scheduled trigger point therapy can give you the benefits of pain reduction from stress, injury, etc.