title: Problems with definitions of disease patterns in psoriatic arthritis.
authors.forename: Paul
authors.initials: P
authors.lastname: Le Goff
mesh_terms: D015535:Arthritis, Psoriatic / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D003937:Diagnosis, Differential; D005121:Extremities / Q000473:pathology*; D006801:Humans; D007596:Joints / Q000503:physiopathology*; D013131:Spine / Q000473:pathology*; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology