Effectiveness of Electro Neuro Adaptive Regulator in Patients With Fibromyalgia

The patients will be asked to assess the subjective pain intensity of the painful in whole body by to marking the level of pain on the scale. Pain intensity was measured with the NRS of 11 points (interval from 0 to 10), where 0 corresponds to no pain, and 10 corresponds to the worst pain imaginable.

The FIQ, which is a validated self-reported questionnaire to measure multidimensional function/health-related quality of life, will be used.Scores in the FIQ range from 0 to 100, An improvement greater than 30% in the FIQ total score has been identified in clinical trials as sensitive to identify a positive response to treatment.

After an interval of 5 minutes CPM was assessed by replicating the TS assessment associated with a conditioning stimulus for eliciting CPM. The conditioning stimulus was an occlusion cuff at the left arm inflated, at a rate of 20 mmHg/s until the subject reports "the first sensation of pain". Acquired pressure at this point remained for 30 seconds. The subject described the intensity of pain, because of occlusion in the arm, on a verbal numerical rating scale (0 = no pain and 10 = worst possible pain). Then cuff inflation was increased or decreased until the intensity of pain will be 3/10 in verbal rating scale

Pressure Pain Thresholds (PPTs) were assessed using algometry in the thumb (dorsal aspect of the distal phalanx). The PPT is defined as the lowest pressure that, using standardized testing conditions, needs to be applied to cause the slightest sensation of pain. It is a reliable and widely used measure

The degree of TS or wind-up will be evaluated in response to 10 applications (pulses) of the algometer, with an approximate rate of pressure increase of 2 Kg/s, at the previously defined PPT at the dorsal surface of the right-hand middle finger midway between the first and second distal joints, and at the middle of the right-hand side upper trapezius belly. Participants were asked to rate the intensity and unpleasantness of the pain intuitively of the first, fifth, and tenth pulse on a numeric pain rating scale.

The Spanish version of the Pain Catastrophizing Scale (PCS) was used to assess catastrophic thoughts about pain, which has shown appropriate psychometric properties.

All participants will complete the Spanish version of the trait subscale of the State Trait Anxiety Inventory (STAI-T). The STAI-T has been found to possess adequate reliability (alpha coefficients of 0.93, test-retest reliability of 0.80) and validity.

The level of depressive symptomatology was measured by the Spanish version of the Beck Depression Inventory (BDI-II); a self-report measure that assesses affective, cognitive and somatic symptoms of depression.

Developed by Miller, will be used to assess fear of movement and injury. We'll use the original 17-item version, which has shown good psychometric guarantees

The Jenkins Sleep Scale (JSS) is a 4-item self-report questionnaire designed to measure how often a subject has experienced sleep problems in the past month and has been studied in FM patients and found to be valid, reliable, and able to detect change after treatment.

The Health related of quality of life will be selected primary outcome. It is a multipurpose, form health survey that includes 36 items taken directly from eight scale scores (physical functioning [PF], role-physical [RP], bodily pain [BP], general health [GH], vitality [VT], social functioning [SF], role-emotional [RE], and mental health [MH]).