Trigger points or muscle "knots" are sore spots in soft tissue that cause deep aching. Myofascial pain syndrome is a chronic pain disorder with too many trigger points. TrPs are usually described as micro-cramps, but the science is half-baked and their nature is controversial. Regardless, these sore spots are as common as pimples, often alarmingly fierce, and they seem to grow like weeds around injuries. They may be a major factor in back and neck pain, as a cause, a complication, or a bit of both. This book may give you: Understand Trigger Point Therapy: Trigger Point Therapy Workbook Easy With Trigger Point Therapy: Relieve Pain Know About Trigger Point Therapy: Massagers And Manual Back Massagers To Relieve Pain