Evaluation of acupuncture on the treatment of head,neck and shoulders pain.

INTERVENTION: E02.186.250 H02.004 Randomized by excel. Acupuncture group: 20 subjects, lying in ventral decubit in a examination table, needles inserted bilaterally at the points GB21, GB20, unilaterally at LI4, LV3 and directly in the region of the MTrPs (maximum of four needles). Electroacupuncture group: 20 subject lying in ventral decubit in a examination table, needles inserted bilaterally at the points GB21, GB20, unilaterally at LI4, LV3 and directly in the region of the MTrPs (maximum of four needles.)The electroacupuncture equipment were programmed as follows: alternating frequency F1=2Hz, T1=5 seconds, F2=100 Hz, T2=5 seconds; total time: 30 minutes; intensity: maximum supported by the patient without pain. Volunteers from placebo group had the needles inserted on 1cm beside the acupuncture point. Each volunteer will receive 8 sessions, two sessions weekly and at the same time of the day. CONDITION: C05.651.550 Myofascial pain ; C05.651.550 ; C05.651.550 PRIMARY OUTCOME: Deacrease of stress level verified by the assay of salivary cortisol (P<0.05). Decrease on the intensity of pain verified by analog visual scale (P<0.05). Improvement on quality of life verified by the questionnare SF‐36 (P<0.05). Increase on pain pressure threshold mesuared by a digital algometer (P<0.05). Increase on range of motion verified by the use of a fleximetry (P<0.05) Morphological tissue changes at the upper trapezius muscle measured ‐ ultrasound images / grays scales and sonoelastography P<0.05) Posture improvement by posture assessment software ‐ SAPO. SECONDARY OUTCOME: Complementary data were asked at the beginning of every session (analgesics, accidents, stress emocional, headache etc) INCLUSION CRITERIA: present at least one myofascial point at the upper trapezius muscle, local or referred pain at least for 6 months and body max index between 19 and 27 kg/m2