Inclusion Criteria:  Presence of myofascial pain syndrome (MPS) and myofascial trigger point (MTP) in the upper trapezius muscle, according to the diagnostic criteria proposed by the American Academy of Pain Medicine(2) and the scientific community (3) a) tender point on palpation, with or without referred pain b) patient recognizes pain during tender point palpation c) at least three of the following: muscle stiffness or muscle spasm, limited range of motion in an associated joint, increase of pain with stress, palpation of tight band and / or nodule, associated with a tender point understand written Spanish.  Exclusion Criteria:  Neck pain of traumatic origin, due to recent surgery or causing radiculopathy Have been diagnosed with chronic pathology, as well as neoplastic or suspicion of it Have received some type of pharmacological or non-pharmacological analgesic treatment in the last 30 days. Pregnant or menstrual women