['fibromyalgia']
['pregabalin']

        Inclusion Criteria:

          -  Fulfill ACR 2010 criteria for fibromyalgia diagnosis.

          -  Literate.

          -  Mean VAS for pain higher than 6 in the last 3 months.

        Exclusion Criteria:

          -  Pregnancy or inadequate use of validated contraceptive method.

          -  Contraindications for Transcranial Magnetic Stimulation.

          -  Alcohol of drugs abuse in the last 6 months.

          -  Any severe neurological, neurosurgical, cardiac, endocrinological, or oncological
             disease (current or past).

          -  Decompensated chronic systemic disease.

          -  Previous use of Pregabalin.
      