Inclusion Criteria:  Patients between 18 and 65 and Presence of mechanical neck pain for at least three months duration Presence of at least one active MTrP in the Upper Trapezius muscle  Exclusion Criteria:  Neck pain of traumatic origin (such as whiplash-associated disorder) Current use of any kind of analgesic therapy Presenting any condition usually considered a perpetuating factor of MTrPs, such as fibromyalgia, hypothyroidism, or iron deficiencies Presenting any contraindication for Dry Needling application Neuropathies (e.g., radiculopathy) Bilateral Pain