Trigger Point Therapy - Stretching Pectoralis Muscles

The pectoralis major muscle can develop multiple myofascial trigger points because of its clavicular and sternal fibers, firing pain across the anterior deltoid and down the lateral aspect of the arm into the thumb and fourth and fifth digits.

A rare myofascial trigger point can mimic the symptoms of angina pectoris. Pain from these myofascial trigger points can also be felt as interscapular and subscapular pain.