Table 1.

Inclusion and exclusion criteria for women with fibromyalgia included in the present study.

Inclusion criteria

Fibromyalgia diagnosis for at least one year, according to the 2010 ACR criteria

VAS pain score≥4 in the two previous weeks

Age between 18–65 years

Skin integrity in the application area of electrodes

No pregnancy and breastfeeding

Cognitive integrity

Formal consent to study participation

Exclusion criteria

A current diagnosis of infections or musculoskeletal inflammatory conditions

Use of NSAIDs, opioids, anti-depressants, beta-blockers in the 7 days before enrollment

Chronic or acute pulmonary, hematologic or kidney diseases

Active malignancy

Life expectancy < 6 months

Participation to other experimental studies in the month prior to the enrollment

Severe heart conditions or pacemaker

Chronic abuse of illicit drug and alcohol

Neuropsychiatric disorders