Myofascial pain syndrome is a very commonly occurring disorder which is characterized by the presence of a tender nodule in a taut band of muscle known as a trigger point. Pain is felt on compression of the trigger point as well as in a characteristic referred pain pattern. Prevalence of myofascial pain is high with as with as many as 30% of patients seen with pain complaints suffering from myofascial pain (1).
(1) Skootsky SA, Jaeger B, Oye RK. Prevalence of myofascial pain in general internal medicine practice. West J Med 1989; 151(2):157-160.