Myofascial pain syndrome (MPS) is initial to other pathologies such as neck pain or tension headaches; the symptoms that are located on the area of myofascial trigger points (MTrPs) of specific references in different muscles. MTrPs are palpable, tense bands found in stiff muscle that cause pain and swelling. They affect the disruptive soft tissues, resulting in deterioration of the muscle and fascia; effects that can be transferred further, through the myofascial chain to distant tissues, inducing the referred pain that is the main feature of MPS. MTrPs are treated with stretching, massage, analgesics, acupuncture, dry needling, electrical stimulation, and ultrasound. Percutaneous microelectrolysis (MEP®) is a new technique that uses galvanic current of low intensity and high density. Based on the previous reviews, the investigators consider that the use of MEP in individuals who have MTrPs in the trapezius is more effective than acupuncture treatment. Objectives: To assess the effect of MEP as a technique for treating pain in MTrPs of the trapezius muscle compared to without current emission, analyzing function, pain and strength in MTrPs before and after both treatments.
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Northwick Park Neck Pain Questionnaire
Timeframe: will take place over 3 weeks, with one session per week.
Mobility with a goniometer
Timeframe: will take place over 3 weeks, with one session per week.
Objective pain measurement with a dynamometer
Timeframe: will take place over 3 weeks, with one session per week.
visual analogue scale
Timeframe: will take place over 3 weeks, with one session per week.