“…Although it has been extensively studied, the etiology of FM is almost unknown [ 6 ] and no biomarkers are currently available for diagnosis, which is based on the patient’s clinical history and assessment of Rome III criteria (American College of Rheumatology ACR criteria) [ 7 , 8 , 9 , 10 ]. Pharmacological therapy is symptomatic and uses several different drug categories, such as analgesics, muscle relaxants, and non-steroidal anti-inflammatories; moreover, the recommended treatment for FM is multidisciplinary and includes lifestyle measures and psychological support [ 1 , 2 , 4 , 5 ]. Sometimes, FM diagnosis is further complicated by comorbidities, i.e., diabetes, overweight, and disorders involving the neurological, gastrointestinal, endocrine, and immune apparatus.…”