title: Reply to: myofascial pain syndrome may be the most difficult disorder that is differentiated from fibromyalgia.
authors.affiliation: Dipartimento di Clinica e Terapia Medica, Sapienza Università di Roma, Policlinico Umberto I, Rome, Italy. manuela.difranco@uniroma1.it.
authors.forename: Manuela
authors.initials: M
authors.lastname: Di Franco
mesh_terms: D059350:Chronic Pain / Q000175:diagnosis*; D003951:Diagnostic Errors; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis*; D006801:Humans; D008297:Male