Trigger Point Therapy for Foot, Ankle, Knee, and Leg Pain: A Self-Treatment WorkbookIf you have pain, it's important to understand where it's coming from but finding the source of your pain is more complex than it seems. Trigger points, contracted portions of muscle cells, can refer pain to other areas of your body, so the trigger points that cause your pain may not be located in the area where you feel the symptoms. Unless your health care provider has been trained in trigger point diagnosis and treatment, you may not get more than