title: Relationship of Psoriatic Arthritis to Other Spondyloarthritides.
abstract: In the early 1970s, Moll and co-workers formulated the unified concept of spondyloarthritides, a group of conditions sharing similar clinical features. Subsequently, criteria for their classification have been proposed by Amor and coworkers, the European Spondylarthropathy Study Group, and the Assessment in SpondyloArthritis international Society. Opinion, however, is divided between those who believe that the different entities of the complex represent the variable expression of the same disease ("lumpers") and those who think that these should be considered separately but under the same umbrella ("splitters"). Several sets of criteria have been proposed for psoriatic arthritis (PsA), the most recent being the ClASsification for Psoriatic Arthritis (CASPAR) criteria. According to some authors, there are persuasive arguments to support the view of PsA as a distinct entity.
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera. ignazioolivieri@tiscalinet.it i.olivieri@ospedalesancarlo.it.
authors.forename: Ignazio
authors.initials: I
authors.lastname: Olivieri
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera.
authors.forename: Salvatore
authors.initials: S
authors.lastname: D'Angelo
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera.
authors.forename: Michele
authors.initials: M
authors.lastname: Gilio
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera.
authors.forename: Carlo
authors.initials: C
authors.lastname: Palazzi
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera.
authors.forename: Ennio
authors.initials: E
authors.lastname: Lubrano
authors.affiliation: From the Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera, Potenza and Matera; and the Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy.I. Olivieri, MD, Consultant, Director, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; S. D'Angelo, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; M. Gilio, MD, Researcher, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; C. Palazzi, MD, Senior Investigator, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera; E. Lubrano, MD, PhD, Senior Lecturer, Academic Rheumatology Unit, Department of Medicine and Health Sciences, University of Molise; A. Padula, MD, Senior Registrar, Rheumatology Department of Lucania, San Carlo Hospital of Potenza and Madonna delle Grazie Hospital of Matera.
authors.forename: Angela
authors.initials: A
authors.lastname: Padula
mesh_terms: D015535:Arthritis, Psoriatic / Q000145:classification* / Q000175:diagnosis / Q000276:immunology / Q000628:therapy; D015796:HLA-B27 Antigen / Q000276:immunology; D006801:Humans; D011237:Predictive Value of Tests; D011379:Prognosis; D025241:Spondylarthritis / Q000145:classification* / Q000175:diagnosis / Q000276:immunology / Q000628:therapy; D025242:Spondylarthropathies / Q000145:classification* / Q000175:diagnosis / Q000276:immunology / Q000628:therapy; D009626:Terminology as Topic
chemical_list: D015796:HLA-B27 Antigen
keywords: ANKYLOSING ARTHRITIS; PSORIATIC ARTHRITIS; SPONDYLOARTHRITIS